cas 128796-39-4, 4-Trifluoromethylphenylboronic acid

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Biphenyl compound, liquid crystal composition containing biphenyl compound and application thereof
The invention relates to a biphenyl compound, a liquid crystal composition containing the biphenyl compound and an application thereof. Specifically, the invention discloses a biphenyl compound of which the structure is shown as a formula I, and the definition is shown in the specification in detail. The invention further discloses the liquid crystal composition. The liquid crystal composition at least comprises one or more compounds in a compound shown as a formula I. The liquid crystal composition has improved physical parameters, such as higher dielectric constant anisotropy, higher optical anisotropy, lower rotary viscosity and the like, has the advantages of realizing quick response, reducing energy consumption, improving image quality and the like, and is suitable for a liquid crystal display in an IPS mode.
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Paragraph 0201-0205

(2021/05/01)

Aryl boronic acid preparation method
The invention belongs to the technical field of fine chemical engineering, and relates to an aryl boronic acid preparation method. In the prior art, aryl boronic acid as a novel safe and environmentally-friendly arylation reagent is widely used in scientific research and production of various fine chemicals containing aryl structures in the fields of medicines, pesticides, advanced materials and the like; and the aryl boronic acid compound preparation method reported in the disclosed literature has problems of harsh reaction conditions and high cost. A purpose of the invention is to provide amethod, wherein an aryl boron compound is formed by carrying out a reaction on a Grignard reagent and trialkyl borate under mild conditions, the composition of the aryl boron compound is converted from the main component diaryl borate into the main component aryl borate, and the aryl borate is hydrolyzed to obtain aryl boric acid, so that the preparation cost of the acyl aryl boric acid compound can be remarkably reduced, and the method has good practical application prospect.
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Paragraph 0033-0036; 0040

(2020/01/25)

Magnesium promoted autocatalytic dehydrogenation of amine borane complexes: A reliable, non-cryogenic, scalable access to boronic acids
Owing to the unusual reactivity of dialkylamine-borane complexes, a methodology was developed to simply access boronic acids. The intrinsic instability of magnesium aminoborohydride was tweaked into a tandem dehydrogenation borylation sequence. Proceeding via an autocatalytic cycle, amineborane dehydrogenation was induced by a variety of Grignard reagents. Overall, addition of the organomagnesium species onto specially designed dialkylamine-borane complexes led to a variety of boronic acids in high yields. In addition, the reaction can be performed under Barbier conditions, on a large scale.
Marciasini, Ludovic D.,Richard, Jimmy,Cacciuttolo, Bastien,Sartori, Guillaume,Birepinte, Melodie,Chabaud, Laurent,Pinet, Sandra,Pucheault, Mathieu
p. 164 - 171
(2018/12/05)

Copper-Catalyzed Monoorganylation of Trialkyl Borates with Functionalized Organozinc Pivalates
Organozinc pivalates, a recently developed air- and moisture-stable organozinc species, were found for the first time as excellent organometallic species in the monoorganylation of trialkyl borates whereby boronic acids were prepared in high yields. The significant advantage of organozinc pivalates over another previously employed organometallic reagents, e. g., organolithium reagents, Grignard reagents and organozinc halides, is that the generation of multiorganylation byproducts such as borinic acids and trialkylboranes were completely suppressed. Additionally, the in situ generated boronates could be directly arranged into Suzuki-Miyaura type cross-coupling reactions to produce biaryls in high yields.
Fu, Ying,Gou, Bei-Lei,Shi, Chun-Zhao,Du, Zhengyin,Shen, Tong
p. 4253 - 4257
(2018/09/18)

Photoinduced Miyaura Borylation by a Rare-Earth-Metal Photoreductant: The Hexachlorocerate(III) Anion
The first photoinduced carbon(sp2)–heteroatom bond forming reaction by a rare-earth-metal photoreductant, a Miyaura borylation, has been achieved. This simple, scalable, and novel borylation method that makes use of the hexachlorocerate(III) anion ([CeIIICl6]3?, derived from CeCl3) has a broad substrate scope and functional-group tolerance and can be conducted at room temperature. Combined with Suzuki–Miyaura cross-coupling, the method is applicable to the synthesis of various biaryl products, including through the use of aryl chloride substrates.
Qiao, Yusen,Yang, Qiaomu,Schelter, Eric J.
supporting information
p. 10999 - 11003
(2018/07/31)

Under the mellow promotion aromatic amine boronise produced by the reaction of an aryl boronic acid and aryl borate method
The invention discloses a method for preparation of aryl boronic acid and aryl borate by alcohol-promoted boronation reaction of aromatic amine, the aromatic amine which is easy to get and cheap is used as a raw material, a diboron compound is used as a boron source, a nitrite is used as a diazotization reagent, and the aryl boronic acid and aryl borate are obtained by alcohol-promoted reaction at room temperature in no presence of a catalyst. The method has the advantages of simple operation, mild reaction conditions, no presence of a metal catalyst, reduction of the production cost, high product yield, tolerance to different functional groups on aryl, and a wide adaptive range.
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Paragraph 0028; 0029-0032

(2017/08/25)

A containing fluorophenylboronic acid production process
The invention discloses a process for preparing fluorine-containing phenylboronic acid. The process comprises the following steps: 1) adding magnesium chips, borazine and an organic solvent into a reaction container; 2) adding an iodine initiator or a Grignard reagent, and stirring for 10-60min; 3) dripping a mixed solution of an organic solvent and a fluorine-containing phenyl compound within 1.5-2.5h for reacting, and controlling the temperature of the system to be between 20 DEG C and a reflux temperature; and 4) separating the reaction system of the last step and purifying to obtain the product. According to the process, the problems about stability and safety of a Grignard reagent intermediate in boronic acid production and ultralow-temperature operation are solved, the cost is reduced, the process is favorable for operation, and also the problem about compatibility of functional groups is also solved.
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Paragraph 0065; 0066; 0067

(2017/07/14)

Borinic Acids via Direct Arylation of Amine-Borane Complexes: An Air- and Water-Stable Boron Source
A synthesis of borinic acids and borinates was optimized using amine-borane complexes as a water and air insensitive borylating agent. The reaction operates under convenient conditions using a non-cryogenic temperature and with no flash chromatography, and it gives no boron impurities. The reaction proceeds through a tandem dehydrogenation-double addition mechanism.
Richard, Jimmy,Birepinte, Mélodie,Charbonnier, Jean Baptiste,Liautard, Virginie,Pinet, Sandra,Pucheault, Mathieu
p. 736 - 744
(2017/02/15)

Development of a Concise Multikilogram Synthesis of LPA-1 Antagonist BMS-986020 via a Tandem Borylation-Suzuki Procedure
The process development for the synthesis of BMS-986020 (1) via a palladium catalyzed tandem borylation/Suzuki reaction is described. Evaluation of conditions culminated in an efficient borylation procedure using tetrahydroxydiboron followed by a tandem Suzuki reaction employing the same commercially available palladium catalyst for both steps. This methodology addressed shortcomings of early synthetic routes and was ultimately used for the multikilogram scale synthesis of the active pharmaceutical ingredient 1. Further evaluation of the borylation reaction showed useful reactivity with a range of substituted aryl bromides and iodides as coupling partners. These findings represent a practical, efficient, mild, and scalable method for borylation.
Smith, Michael J.,Lawler, Michael J.,Kopp, Nathaniel,McLeod, Douglas D.,Davulcu, Akin H.,Lin, Dong,Katipally, Kishta,Sfouggatakis, Chris
p. 1859 - 1863
(2017/11/24)

Scalable, Metal- and Additive-Free, Photoinduced Borylation of Haloarenes and Quaternary Arylammonium Salts
We report herein a simple, metal- and additive-free, photoinduced borylation of haloarenes, including electron-rich fluoroarenes, as well as arylammonium salts directly to boronic acids. This borylation method has a broad scope and functional group tolerance. We show that it can be further extended to boronic esters and carried out on gram scale as well as under flow conditions.
Mfuh, Adelphe M.,Doyle, John D.,Chhetri, Bhuwan,Arman, Hadi D.,Larionov, Oleg V.
supporting information
p. 2985 - 2988
(2016/03/19)

Methanol-promoted borylation of arylamines: A simple and green synthetic method to arylboronic acids and arylboronates
A Sandmeyer borylation of arylamines via a SN2Ar pathway promoted by methanol with sodium nitrite and hydrochloric acid as diazotization agent has been developed, which provide a simple and green synthetic method to arylboronic acids and arylboronates. Georg Thieme Verlag Stuttgart New York.
Zhao, Cong-Jun,Xue, Dong,Jia, Zhi-Hui,Wang, Chao,Xiao, Jianliang
p. 1577 - 1584
(2014/07/08)

Mn-catalyzed aromatic C-H alkenylation with terminal alkynes
The first manganese-catalyzed aromatic C-H alkenylation with terminal alkynes is described. The procedure features an operationally simple catalyst system containing commercially available MnBr(CO)5 and dicyclohexylamine (Cy2NH). The reaction occurs readily in a highly chemo-, regio-, and stereoselective manner delivering anti-Markovnikov E-configured olefins in high yields. Experimental study and DFT calculations reveal that (1) the reaction is initiated by a C-H activation step via the cooperation of manganese and base; (2) manganacycle and alkynylmanganese species are the key reaction intermediates; and (3) the ligand-to-ligand H-transfer and alkynyl-assisted C-H activation are the key steps rendering the reaction catalytic in manganese.
Zhou, Bingwei,Chen, Hui,Wang, Congyang
p. 1264 - 1267
(2013/03/14)

Nickel-catalyzed borylation of halides and pseudohalides with tetrahydroxydiboron [B2(OH)4]
Arylboronic acids are gaining increased importance as reagents and target structures in a variety of useful applications. Recently, the palladium-catalyzed synthesis of arylboronic acids employing the atom-economical tetrahydroxydiboron (BBA) reagent has been reported. The high cost associated with palladium, combined with several limitations of both palladium- and copper-catalyzed processes, prompted us to develop an alternative method. Thus, the nickel-catalyzed borylation of aryl and heteroaryl halides and pseudohalides using tetrahydroxydiboron (BBA) has been formulated. The reaction proved to be widely functional group tolerant and applicable to a number of heterocyclic systems. To the best of our knowledge, the examples presented here represent the only effective Ni-catalyzed Miyaura borylations conducted at room temperature.
Molander, Gary A.,Cavalcanti, Livia N.,Garcia-Garcia, Carolina
p. 6427 - 6439
(2013/07/26)

Vaulted biaryls in catalysis: A structure-activity relationship guided tour of the immanent domain of the VANOL ligand
The active site in the BOROX catalyst is a chiral polyborate anion (boroxinate) that is assembled in situ from three equivalents of B(OPh) 3 and one of the VANOL ligand by a molecule of substrate. The substrates are bound to the boroxinate by Hbonds to oxygen atoms O1-O3. The effects of introducing substituents at each position of the naphthalene core of the VANOL ligand are systematically investigated in an aziridination reaction. Substituents in the 4,4′- and 8,8′-positions have a negative effect on catalyst performance, whereas, substituents in the 7- and 7′-positions have the biggest impact in a positive direction. VANOL destination: The active site in the BOROX catalyst is a chiral polyborate anion (boroxinate; see figure) that is assembled in situ from three equivalents of B(OPh)3 and one of the VANOL ligand by a molecule of substrate. The effects of introducing substituents at each position of the naphthalene core of the VANOL ligand are systematically investigated in an aziridination reaction. Copyright
Guan, Yong,Ding, Zhensheng,Wulff, William D.
p. 15565 - 15571
(2013/11/19)

Scope of the palladium-catalyzed aryl borylation utilizing bis-boronic acid
The Suzuki-Miyaura reaction has become one of the more useful tools for synthetic organic chemists. Until recently, there did not exist a direct way to make the most important component in the coupling reaction, namely the boronic acid. Current methods to make boronic acids often employ harsh or wasteful reagents to prepare boronic acid derivatives and require additional steps to afford the desired boronic acid. The scope of the previously reported palladium-catalyzed, direct boronic acid synthesis is unveiled, which includes a wide array of synthetically useful aryl electrophiles. It makes use of the newly available second generation Buchwald XPhos preformed palladium catalyst and bis-boronic acid. For ease of isolation and to preserve the often sensitive C-B bond, all boronic acids were readily converted to their more stable trifluoroborate counterparts.
Molander, Gary A.,Trice, Sarah L. J.,Kennedy, Steven M.,Dreher, Spencer D.,Tudge, Matthew T.
supporting information; experimental part
p. 11667 - 11673
(2012/09/05)

Palladium-catalyzed borylation of aryl and heteroaryl halides utilizing tetrakis(dimethylamino)diboron: One step greener
The palladium-catalyzed borylation of aryl and heteroaryl halides with a novel borylating agent, tetrakis(dimethylamino)diboron [(Me2N) 2B-B(NMe2)2], is reported. The method is complementary to the previously reported method utilizing bis-boronic acid (BBA) in that certain substrates perform better under one set of optimized reaction conditions than the other. Because tetrakis(dimethylamino)diboron is the synthetic precursor to both BBA and bis(pinacolato)diboron (B 2Pin2), the new method represents a more atom-economical and efficient approach to current borylation methods.
Molander, Gary A.,Trice, Sarah L. J.,Kennedy, Steven M.
supporting information
p. 4814 - 4817,4
(2012/12/12)

Novel multifunctional organic semiconductor materials based on 4,8-substituted 1,5-naphthyridine: Synthesis, single crystal structures, opto-electrical properties and quantum chemistry calculation
A series of 4,8-substituted 1,5-naphthyridines (1a-1h) have been successfully synthesised by a Suzuki cross-coupling between 4,8-dibromo-1,5- naphthyridine (4) and the corresponding boronic acids (2a-2h) in the presence of catalytic palladium acetate in yields of 41.4-75.8% and have ben well characterized. They are thermally robust with high phase transition temperatures (above 186 °C). Compounds 1b, 1e and 1f crystallized in the monoclinic crystal system with the space groups P21/c, P21/c and P21/n, respectively. All of them show the lowest energy absorption bands (λmaxAbs: 294-320 nm), revealing low optical band gaps (2.77-3.79 eV). These materials emit blue fluorescence with λmaxEm ranging from 434-521 nm in dilute solution in dichloromethane and 400-501 nm in the solid state. 4,8-Substituted 1,5-naphthyridines 1a-1h have estimated electron affinities (EA) of (2.38-2.72 eV) suitable for electron-transport materials and ionization potentials (IP) of 4.85-5.04 eV facilitate excellent hole-injecting/hole-transport materials properties. Quantum chemical calculations using DFT B3LYP/6-31G* showed nearly identical the lowest unoccupied molecular orbitals (LUMO) of -2.39 to -2.19 eV and the highest occupied molecular orbitals (HOMO) of -5.33 to -6.84 eV. These results demonstrate the 4,8-substituted 1,5-naphthyridines 1a-1h with a simple architecture might be promising blue-emitting (or blue-green-emitting) materials, electron-transport materials and hole-injecting/hole-transport materials for applications for developing high-efficiency OLEDs.
Wang, Kun-Yan,Chen, Chen,Liu, Jin-Fang,Wang, Qin,Chang, Jin,Zhu, Hong-Jun,Li, Chong
supporting information; experimental part
p. 6693 - 6704
(2012/09/22)

Organotrifluoroborate hydrolysis: Boronic acid release mechanism and an acid-base paradox in cross-coupling
The hydrolysis of potassium organotrifluoroborate (RBF3K) reagents to the corresponding boronic acids (RB(OH)2) has been studied in the context of their application in Suzuki-Miyaura coupling. The "slow release" strategy in such SM couplings is only viable if there is an appropriate gearing of the hydrolysis rate of the RBF3K reagent with the rate of catalytic turnover. In such cases, the boronic acid RB(OH)2 does not substantially accumulate, thereby minimizing side reactions such as oxidative homocoupling and protodeboronation. The study reveals that the hydrolysis rates (THF, H2O, Cs2CO 3, 55 °C) depend on a number of variables, resulting in complex solvolytic profiles with some RBF3K reagents. For example, those based on p-F-phenyl, naphthyl, furyl, and benzyl moieties are found to require acid catalysis for efficient hydrolysis. This acid-base paradox assures their slow hydrolysis under basic Suzuki-Miyaura coupling conditions. However, partial phase-splitting of the THF/H2O induced by the Cs2CO 3, resulting in a lower pH in the bulk medium, causes the reaction vessel shape, material, size, and stirring rate to have a profound impact on the hydrolysis profile. In contrast, reagents bearing, for example, isopropyl, β-styryl, and anisyl moieties undergo efficient "direct" hydrolysis, resulting in fast release of the boronic acid while reagents bearing, for example, alkynyl or nitrophenyl moieties, hydrolyze extremely slowly. Analysis of B-F bond lengths (DFT) in the intermediate difluoroborane, or the Swain-Lupton resonance parameter (R) of the R group in RBF3K, allows an a priori evaluation of whether an RBF3K reagent will likely engender "fast", "slow", or "very slow" hydrolysis. An exception to this correlation was found with vinyl-BF 3K, this reagent being sufficiently hydrophilic to partition substantially into the predominantly aqueous minor biphase, where it is rapidly hydrolyzed.
Lennox, Alastair J. J.,Lloyd-Jones, Guy C.
p. 7431 - 7441
(2012/06/16)

Highly efficient one-pot access to functionalized arylboronic acids via noncryogenic bromine/magnesium exchanges
A general and convenient protocol for the electrophilic borylation of aryl Grignard reagents prepared from arylbromides by direct insertion of magnesium in the presence of LiCl or by Mg/Br exchange with iPrMgCl?LiCl has been developed. Various aryl boronic acids were synthesized in a straightforward manner in excellent yields at 0 °C.
Leermann, Timo,Leroux, Frederic R.,Colobert, Francoise
supporting information; experimental part
p. 4479 - 4481
(2011/10/09)

Enantioselective synthesis of cis-1,2-disubstituted cyclopentanes and cyclohexanes by Suzuki-Miyaura cross-coupling and iridium-catalyzed asymmetric hydrogenation
A series of 1,2-disubstituted cyclohexene derivatives was prepared through Suzuki-Miyaura cross-coupling of 2-bromo-1-cyclohexenecarbaldehyde or 2-carbomethoxy-1-cyclohexen-1-yl triflate with arylboronates. These tetra-substituted cyclic alkenes were subjected to Ir-catalyzed asymmetric hydrogenation. In this way cis-1-methoxymethyl-2-arylcyclohexanes were obtained in high yield with excellent enantio- and diastereoselectivities (up to >99%ee, >99%cis) by using phosphinomethyloxazolines as ligands. Asymmetric hydrogenation of analogous cyclopentene derivatives, prepared by Suzuki-Miyaura cross-coupling, proved to be more difficult and proceeded with lower enantioselectivities of up to 88%ee. The synthetic potential of this cross-coupling/asymmetric-hydrogenation strategy was demonstrated by an enantioselective route to chiral hexahydrofluorenones. Alkene interest: Starting from arylboronates, a variety of cyclic, tetra-substituted olefins was prepared by Suzuki-Miyaura cross-coupling (see scheme). Subsequent Ir-catalyzed asymmetric hydrogenation with phosphanylmethyloxazoline ligand complexes led to cis-disubstituted cycloalkane derivatives in high yield and excellent enantio- and distereoselectivities. Copyright
Schumacher, Andreas,Schrems, Marcus G.,Pfaltz, Andreas
p. 13502 - 13509
(2012/01/05)

Thermal and microwave hydrolysis of organotrifluoroborates mediated by alumina
Hydrolysis of organotrifluoroborates to the corresponding organoboronic acids is readily achieved under either thermal or microwave conditions in the presence of alumina. The organoboronic acid products are obtained in good to excellent yields with essent
Kabalka, George W.,Coltuclu, Vitali
experimental part
p. 6271 - 6272
(2010/01/11)

A NOVEL ANTHRACENE TYPED COMPOUND AND THE ORGANIC ELECTROLUMINESCENCE DISPLAY DEVICE USING THE SAME
The present invention relates to an anthracene compound and an organic electroluminescent display device using the same. Particularly, the present invention relates to an anthracene compound which has good blue light emitting property, transports holes and electrons efficiently to enable an organic electroluminescent display device to have a low voltage, high brightness and long lifetime, and an organic electroluminescent display device using the same.
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Page/Page column 59

(2009/01/20)

Substituent effects on aryltrifluoroborate solvolysis in water: Implications for Suzuki-Miyaura coupling and the design of stable 18F-labeled aryltrifluoroborates for use in PET imaging
(Chemical Equation Presented) Whereas electron withdrawing substituents retard the rate of aryltrifluoroborate solvolysis, electron-donating groups enhance it. Herein is presented a Hammett analysis of the solvolytic lability of aryltrifluoroborates where log(Ksolv) values correlate to a values with a ρ value of approximately -1. This work provides a predictable rubric for tuning the reactivity of boron for several uses including 18F-labeled PET reagents and has mechanistic implications for ArBF3-enhanced ligandless metal-mediated cross coupling reactions with aryltrifluoroborates.
Ting, Richard,Harwig, Curtis W.,Lo, Justin,Li, Ying,Adam, Michael J.,Ruth, Thomas J.,Petrin, David M.
p. 4662 - 4670
(2008/09/20)

Iridium(I)-salicylaldiminato-cyclooctadiene complexes used as catalysts for phenylborylation
Iridium(I) salicylaldiminato-cyclooctadiene complexes, Ir(-o-O-C6H4-CH{double bond, long}N-R)(cod) (R = CH2Ph (1), Ph (2); cod = 1,5-cyclooctadiene), have been prepared, characterized and used as catalysts for arylborylation via C-H activation. With 1 as a catalyst, isolated yields of up to 91% has been achieved for the borylation of benzene by bis(pinacolato)diboron in the presence of tetra-2-pyridinylpyrazine and an ionic liquid. The catalytic system could be recycled for at least three times without loss of activity.
Yinghuai, Zhu,Yan, Koh Cheng,Jizhong, Luo,Hwei, Chong Siow,Hon, Yong Chun,Emi,Zhenshun, Su,Winata, Monalisa,Hosmane, Narayan S.,Maguire, John A.
p. 4244 - 4250
(2008/02/13)

Carbon-carbon bond-forming enantioselective synthesis of chiral organosilicon compounds by rhodium/chiral diene-catalyzed asymmetric 1,4-addition reaction
(Chemical Equation Presented) A new synthetic method for chiral organosilicon compounds through a rhodium-catalyzed asymmetric 1,4-addition of arylboronic acids to β-silyl α,β-unsaturated carbonyl compounds has been developed. By employing (R,R)-Bn-bod * as a ligand, a range of arylboronic acids can be coupled with these substrates in very high enantiomeric excess. The resulting β-silyl 1,4-adducts can be converted to β-hydroxy carbonyl compounds or allylsilanes while retaining their stereochemical information.
Shintani, Ryo,Okamoto, Kazuhiro,Hayashi, Tamio
p. 4757 - 4759
(2007/10/03)

Synthesis of 4,5-diarylquinazolines: A system with cofacial aromatic rings. Diazines. Part 39
Using metallation reactions and Pd-catalyzed coupling, we report here two synthetic routes leading to eight new 4,5-di(hetero)arylquinazolines. Non-linear activity has been highlighted for some of these compounds with stacked aromatic rings.
Busch, Alexandrine,Chapoulaud, Valérie Gautheron,Audoux, Jér?me,Plé, Nelly,Turck, Alain
p. 5373 - 5382
(2007/10/03)

Ligands for metals and improved metal-catalyzed processes based thereon
One aspect of the present invention relates to ligands for transition metals. A second aspect of the present invention relates to the use of catalysts comprising these ligands in transition metal-catalyzed carbon-heteroatom and carbon-carbon bond-forming reactions. The subject methods provide improvements in many features of the transition metal-catalyzed reactions, including the range of suitable substrates, reaction conditions, and efficiency.
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(2008/06/13)

Carboxamides useful as inhinitors of microsomal triglyceride transfer protein and of apolipoprotein b secretion
Compounds of formula (1) wherein R2—C, R3—C, R4—C or R5—C may be replaced by N; and wherein n is 1, 2 or 3; R1 is aryl, heteroaryl or (aryl or heteroaryl)-lower alkoxy; R2, R3, R4 and R5 are independently hydrogen, lower alkyl, lower alkoxy, halo, trifluoromethyl or cyano; R6 is (i) or (ii) m is 1, 2 or 3; R7 is hydrogen, lower alkyl (aryl or heteroaryl)-lower alkyl, lower alkoxy, (aryl or heteroaryl)-lower alkoxy, hydroxy, oxo, lower alkylenedioxy or lower alkanoyloxy; W is O, S or NR8; R8 is —CORa, (iii), —COORd, —SO2Re, hydrogen, optionally substituted lower alkyl, aryl, heteroaryl or (aryl or heteroaryl)-lower alkyl; Ra, Rd and Re, are independently optionally substituted lower alkyl, cycloalkyl, adamantyl, aryl, heteroaryl or (aryl or heteroaryl)-lower alkyl; Rb and Rc are independently hydrogen, cycloalkyl, optionally substituted lower alkyl, aryl, heteroaryl or (aryl or heteroaryl) lower alkyl; or Rb and Rc together represent lower alkylene; and pharmaceutically acceptable salts thereof; and enantiomers thereof; which are useful as inhibitors of microsomal triglyceride transfer protein (MTP) and of apolipoprotein B (apoB) secretion.
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(2008/06/13)

1,2 DIAMIDO CYCLOALKYL SODIUM CHANNEL BLOCKERS
1,2 Diamido cycloalkyl compounds that are sodium channel blockers; pharmaceutical compositions that include an effective amount of the aryl-link-aryl thiazolidin-dione and aryl-link-aryl oxazolodine-dione compounds and a pharmaceutically acceptable carrier; and a method of treatment of acute pain, chronic pain, visceral pain, inflammatory pain, or neuropathic pain, as well as irritable bowel syndrome, Crohns disease, epilepsy, partial and generalized tonic seizures, multiple sclerosis, bipolar disease, and tachy-arrhythmias by the administration of an effective amount of aryl-link-aryl thiazolidine-dione and aryl-link-aryl oxazolodine-dione compounds, either alone, or in combination with one or more therapeutically active compounds, are described.
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Page 72-73

(2010/11/30)

Process for preparing boronic and borinic acids
A process for preparing boronic acids of the formula (I) and borinic acids of the formula (II), by reaction of chloroaromatics of the formula (III) with lithium metal and boron compounds BW′W′W′″, where W′, W′ and W′″ are each, independently of one another, C1-C6-alkoxy, fluorine, chlorine, bromine, iodine, N(C1-C6-alkyl)2 or S(C1-C5-alkyl), in a solvent at temperatures in the range from ?100 to 80° C.
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(2008/06/13)

Amino-benzocycloalkane derivatives
Compounds of the formula I wherein R2—C, R3—C, R4—C or R5—C may be replaced by N; and wherein n is 1, 2 or 3; R1is aryl, cycloalkyl or heterocyclyl; R2, R3, R4and R5are independently hydrogen, optionally substituted alkyl, halo, amino, substituted amino, trifluoromethyl, cyano, carboxyl, alkoxycarbonyl, aralkoxycarbonyl, (alkyl, aryl or aralkyl)-thio, (alkyl, aryl or aralkyl)-oxy, acyloxy, (alkyl, aryl or aralkyl)-aminocarbonyloxy; or any two of R2, R3, R4and R5at adjacent positions are alkylenedioxy; R6is hydrogen, optionally substituted alkyl, amino, substituted amino, acylamino, wherein Rais hydrogen or optionally substituted alkyl, Rband Rcare independently hydrogen, optionally substituted alkyl, cycloalkyl, aryl or heterocyclyl; or Rband Rctogether represent lower alkylene or lower alkylene interrupted by O, S, or N—(H, alkyl or aralkyl); Rdis optionally substituted alkyl, cycloalkyl, aryl or heterocyclyl; and Reis optionally substituted alkyl, aryl, heterocyclyl, cycloalkyl, amino or substituted amino; and pharmaceutically acceptable salts thereof; and enantiomers thereof; which are useful as inhibitors of microsomal triglyceride transfer protein (MTP) and of apolipoprotein B (ApoB) secretion.
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(2008/06/13)

3-thienyl and 3-furanyl pyrrolidine modulators of chemokine receptor activity
The present invention is directed to pyrrolidine compounds of the formula I: (wherein R1, R2, R3, R4c, R4d, and R4fare defined herein) which are useful as modulators of chemokine receptor activity. In particular, these compounds are useful as modulators of the chemokine receptors CCR-3 and/or CCR-5.
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(2008/06/13)

Ligands for metals and improved metal-catalyzed processes based thereon
One aspect of the present invention relates to novel ligands for transition metals. A second aspect of the present invention relates to the use of catalysts comprising these ligands in transition metal-catalyzed carbon-heteroatom and carbon-carbon bond-forming reactions. The subject methods provide improvements in many features of the transition metal-catalyzed reactions, including the range of suitable substrates, reaction conditions, and efficiency.
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(2008/06/13)

Substituted terphenyl compounds for the treatment of inflammation
A class of terphenyl compounds is described for use in treating inflammation and inflammation-related disorders. Compounds of particular interest are defined by Formula II: STR1 wherein each of R2 and R3 is independently selected from hydrido and halo; or wherein R2 and R3 together form --OCH2 O--; wherein each of R6 through R8 is independently selected from hydrido, lower alkyl, halo, lower alkoxy, lower haloalkyl, and lower dialkylamino; or wherein R6 and R7 together form --OCH2 O; and wherein R12 is selected from lower alkylsulfonyl and aminosulfonyl; or a pharmaceutically-acceptable salt thereof.
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(2008/06/13)

Angiotensin II antagonizers which are condensed pyridine derivatives
The invention concerns pharmaceutically useful novel compounds of the formula I, in which R1, R2, R3, R4, R5, R6, R7, X and Z have the various meanings defined herein, and their non-toxic salts, and pharmaceutical compositions containing them. The novel compounds are of value in treating conditions such as hypertension and congestive heart failure. The invention further concerns processes for the manufacture of the novel compounds and the use of the compounds in medical treatment.
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(2008/06/13)

Reaction of Arylboronic Acids and their Derivatives with Lead Tetra-acetate. The Generation of Aryl-lead Triacetates, and meta- and para-Phenylenebis(lead triacetate), in situ for Electrophilic Arylation
Arylboronic acids and some of their derivatives have been found to undergo a rapid boron-lead exchange with lead tetra-acetate.In the presence of a catalytic amount of mercury(II) acetate, the reaction produces mainly the aryl-lead triacetate, and it has been developed as a convenient method for in situ generation of these useful electrophilic C-arylating reagents.The reaction allows the generation for the first time of meta- and para-phenylenebis(lead triacetate), compounds which behave as meta- and para-phenylene dication equivalents.
Morgan, Jacqueline,Pinhey, John T.
p. 715 - 720
(2007/10/02)