cas 7025-06-1, 2-BROMODIPHENYL ETHER | Articles data

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Side-Arm Control in Phosphine-Sulfonate Palladium- and Nickel-Catalyzed Ethylene Polymerization and Copolymerization
A series of phosphine-sulfonate ligands bearing various side-arm substituents were designed and prepared. The corresponding Pd(II) complexes [κ2-(P,O)-2-(PPhAr)-1-benzenesulfonato]Pd(Me)(dmso) (Pd1, Ar = o-MeO-C6H4; Pd2, A
Liang, Tao,Chen, Changle
p. 2338 - 2344
(2017)
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Quinoline Ligands Improve the Classic Direct C?H Functionalisation/Intramolecular Cyclisation of Diaryl Ethers to Dibenzofurans
The C?H functionalisation approach to the synthesis of dibenzofurans is hampered by a number of problems. Herein we describe the evolution of a cheap, bench stable quinoline ligand, which obviates most of the current limitations and allows for a high yielding synthesis of a range of valuable dibenzofurans. Dibenzofurans are important motifs in natural products and compounds with wide biological activity.
Mackey, Katrina,Jones, David J.,Pardo, Leticia M.,McGlacken, Gerard P.
supporting information
p. 495 - 498
(2021/01/12)

Ag-Catalyzed Cyclization of Arylboronic Acids with Elemental Selenium for the Synthesis of Selenaheterocycles
A general method for the synthesis of five-membered and six-membered selenaheterocycles through Ag-catalyzed C?Se bond-forming reaction is reported. This reaction proceeds via intramolecular cyclization of arylboronic acids with selenium powder. Preliminary mechanism studies demonstrate that this transformation involves a selenium-centred radical intermediate. (Figure presented.).
Gao, Wen-Xia,Huang, Xiao-Bo,Liu, Miao-Chang,Wu, Hua-Yue,Zhang, Xue,Zhou, Yun-Bing
supporting information
p. 5639 - 5644
(2020/11/30)

Anthracene compound, preparing method of anthracene compound and organic light-emitting device
The invention provides an anthracene compound. The anthracene compound has a structure in the formula (I), wherein Q is the C1-60 alkyl group or the C6-60 aryl group or the C5-60 condensed ring group or the C5-60 heterocyclic group; Ar is the C6-60 aryl group or the C5-60 condensed ring group or the C5-60 heterocyclic group; and Ar1 is H, the C1-60 alkyl group, the C1-60 alkoxy group, the C1-60 ether group, the C6-60 aryl group, the C6-60 condensed ring group, the C6-60 heterocyclic group and the C6-60 arylamine group. Compared with the prior art, the anthracene compound is connected with an aromatic compound through anthracene, and the Q, Ar and Ar1 groups are introduced, so that a device emits blue light after the organic compound is applied to the organic light-emitting device; and meanwhile, the means that the above groups are used for adjusting the light-emitting wavelength is adopted, the light-emitting efficiency of the organic light-emitting device is high, and the service life is long.
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Paragraph 0119-0121

(2017/05/02)

Spirocyclic derivatives
The present invention provides compounds of formula (I): compositions comprising such compounds; the use of such compounds in therapy (for example in the treatment or prevention of a disease, disorder or condition ameliorated by inhibition of a dopamine transporter); and methods of treating patients with such compounds; wherein R1, R2, R3, R4, R5, R6, R9, R10, Q, X, Y, Z, A, L, B, m, n and p are as defined herein.
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Page/Page column 80

(2016/04/09)

MATERIALS FOR ELECTRONIC DEVICES
The present invention relates to a compound, comprising a pyrene skeleton and arylamino groups, according to formula (I). The compound is suitable for use as a functional material in electronic devices.
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Paragraph 0149; 0153; 0154

(2016/10/09)

BIPHENYL DERIVATIVES, PHARMACEUTICAL COMPOSITION COMPRISING THE SAME, AND PREPARATION METHOD THEREOF
Provided are biphenyl derivatives exhibiting activity towards central nervous system diseases by acting on the 5-HT7 receptor, pharmaceutically acceptable salts thereof, a method for preparing the compounds and pharmaceutical compositions inclu
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Paragraph 0162-0163

(2014/08/19)

PRMT5 INHIBITORS AND USES THEREOF
Described herein are compounds of Formula (A), pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof. Compounds of the present invention are useful for inhibiting PRMT5 activity. Methods of using the compounds for treating PRMT5-mediated disorders are also described
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Paragraph 00386

(2014/07/08)

Effect of ligand polarization on asymmetric structural formation for strongly luminescent lanthanide complexes
The effect of ligand polarization on the formation of strongly luminescent lanthanide complexes with asymmetric structures is described for the first time. The lanthanide complexes are composed of EuIII ions, three hexafluoroacetylacetonate (hfa) ligands, and two monodentate phosphine oxide ligands, namely, triphenylphosphine oxide (TPPO), p-tolyldiphenylphosphine oxide (TPPO-Me), tri-p-tolylphosphine oxide (TPPO-3Me) or o- phenoxyphenyldiphenylphosphine oxide (TPPO-OPh). The luminescence properties of the EuIII complexes are characterized by their emission quantum yields, emission lifetimes, and their radiative (kr) and nonradiative (knr) rate constants. The EuIII complex with TPPO-OPh ligands offers a markedly high emission quantum yield (72 % in [D 6]acetone, 85 % in the solid state) owing to enhancement of the electric dipole transition and suppression of vibrational relaxation, which are directly related to kr and knr. The coordination geometries of the EuIII complexes are categorized by shape-measure calculations. The EuIII complexes exhibit characteristic square-antiprismatic or trigonal-dodecahedral structures, depending on the ligand polarization. Strongly luminescent Eu(hfa)3(TPPO-OPh) 2 has an asymmetric dodecahedron structure. The formation of distorted dodecahedral structures with low vibrational frequencies for the enhancement of luminescence is elucidated in terms of the ligand polarization of the monodentate phosphine oxide ligands in the EuIII complexes. EuIII complexes with three hexafluoroacetylacetonate and two monodentate phosphine oxide ligands exhibit characteristic square-antiprismatic or trigonal-dodecahedral structures depending on the ligand polarization. Ligands with large dipole moments result in characteristic dodecahedron structures and markedly high emission quantum yields (72 % in [D 6]acetone, 85 % in the solid state).
Hasegawa, Yasuchika,Ohkubo, Tomoki,Nakanishi, Takayuki,Kobayashi, Atsushi,Kato, Masako,Seki, Tomohiro,Ito, Hajime,Fushimi, Koji
p. 5911 - 5918
(2013/12/04)

Triphenyltin chloride as a new source of phenyl group for C-heteroatom and C-C bond formation
Ph3SnCl is introduced as a very suitable source of phenyl group for coupling with phenols, amines, and thiols in the presence of Cu(OAc)2 in Et3N at room temperature to give aryl ethers, amines, and arylthio ethers in high yields. In addition, the application of Ph3SnCl in the Stille coupling of aryl halides in the presence of Pd(0) catalyst in PEG 400 at 110C is discussed.
Iranpoor, Nasser,Firouzabadi, Habib,Elham, Etemadi Davan,Rostami, Abed,Nematollahi, Arash
p. 123 - 130
(2013/10/01)

Potassium tert-butoxide-mediated synthesis of unsymmetrical diaryl ethers, sulfides and selenides from aryl bromides
Potassium tert-butoxide mediated carbon-chalcogen C-E (E=O, S and Se) coupling reaction has been studied from aryl bromide and phenol/aryl disulfide/diselenide substrates. A series of unsymmetrical diaryl chalcogenides were accessed from aryl bromide and diaryl dichalcogenide precursors by using 2.5 equiv of potassium tert-butoxide in DMSO at 80 C. Unsymmetrical diaryl ethers were also obtained by using phenol precursors at 40-45 C. Aryl bromides with methyl, trifluoromethyl, methoxy and nitro substituents showed compatibility in the carbon-chalcogen bond forming reaction. 4-Methoxy, methyl, trifluoromethyl substituted bromobenzene substrates gave two regioisomers: 3-substituted and 4-substituted diaryl chalcogenides when reacted with phenols/diaryl disulfides/diselenides. Formation of two regioisomeric diaryl chalcogenides in the reaction mixture suggests that potassium tert-butoxide reacts with bromobenzene to produce benzyne intermediate, which subsequently reacts with diaryl dichalcogenides and finally give a regioisomeric mixture of 4-substituted and 3-substituted diaryl chalcogenides.
Kumar, Amit,Bhakuni, Bhagat Singh,Prasad, Ch. Durga,Kumar, Shailesh,Kumar, Sangit
p. 5383 - 5392
(2013/07/04)

Practical radical cyclizations with arylboronic acids and trifluoroborates
Practical radical cyclizations using organoboronic acids and trifluoroborates take place in water, open to air, and in a scalable fashion employing catalytic silver nitrate and stoichiometric potassium persulfate. Both Pschorr-type cyclizations and tandem radical cyclization/trap cascades are described, illustrating the utility of these mild conditions for the generation of polycyclic scaffolds.
Lockner, Jonathan W.,Dixon, Darryl D.,Risgaard, Rune,Baran, Phil S.
supporting information; experimental part
p. 5628 - 5631
(2011/12/03)

COMPOUND
There is provided a compound having Formula (I), wherein each of R1, R2, R3, R4, R5, R6, R7, R8 and R9 are independently selected from (a) H, (b) R13, -OC(R13)3, -OCH(R13)2, -OCH2R13, -C(R13)3, -CH(R13)2, or -CH2R13 wherein R13 is a halogen; (c) -CN; (d) optionally substituted alkyl, (e) optionally substituted heteroalkyl; (f) optionally substituted aryl; (g) optionally substituted heteroaryl; (h) optionally substituted arylalkyl; (i) optionally substituted heteroarylalkyl; (j) hydroxy; (k) alkoxy; (I) aryloxy; (m) -SO2-alkyl; and (n) -N(R14)C(O)R15, wherein R14 and R15 are independently selected from H and hydrocarbyl, wherein the optional substituents of (d) (e) (T) (h) and (i) are selected from the group consisting of: C1-6 alkyl, halo, cyano, nitro, haloalkyl, hydroxy, C1-6 alkoxy, carboxy, carboxyalkyl, carboxamide, mercapto, amino, alkylamino, dialkylamino, sulfonyl, sulfonamido, aryl and heteroaryl; wherein n and p are independently selected from 0 and 1; X is an optional group selected from O, S, S=O, S(=O)2, C=O, S(=O)2NR16, C=ONR17, NR18, in which R16, R17, and R18 are independently selected from H and hydrocarbyl, R10 is selected from H and hydrocarbyl, R11 is selected from CR19R20 and C=O, in which R19 and R20 are independently selected from H and hydrocarbyl, R12 is selected from a substituted five or six membered carbon rings optionally containing one or more hetero atoms selected from N, S, and O and optionally having fused thereto a further ring, and wherein the one or more substituents are selected from hydrocarbyl groups.
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Page/Page column 99

(2009/06/27)

NEW COMPOUNDS I/418
There is provided compounds of formula I, wherein R1 to R7 have meanings given in the description, which are useful in the prophylaxis and in the treatment of arrhythmias, in particular atrial and ventricular arrhythmias.
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Page/Page column 34

(2008/06/13)

2-FURANCARBOXYLIC ACID HYDRAZIDES AND PHARMACEUTICAL COMPOSITIONS CONTAINING THE SAME
The present invention provides 2-furancarboxylic acid hydrazide compounds represented by General Formula(I) below, and prodrugs, physiologically acceptable salts, hydrates, solvates thereof, methods for producing them and pharmaceutical compositions containing them: wherein A is a group represented by Formula (a) or the like: (wherein either R4 or R5 represents cyano, nitro or the like, and the other represents a hydrogen atom or the like); either R1 or R2 represents a group: -D-(X)m-R6 or the like, and the other represents a group: -E-(Y)n-R7, hydrogen atom, aryl or the like; R3 is a hydrogen atom or the like; D and E independently represent aryl; X and Y independently represent 0 or the like; R6 and R7 independently represent alkyl, aryl, arylalkyl or the like; and m and n are independently 0 or 1, provided that the aryl is optionally substituted. Such compounds exhibit a potent antagonistic activity on glucagon receptor and are of use as preventive and/or therapeutic agents for symptoms and diseases in which glucagon is involved.
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Page 32

(2008/06/13)

Synthesis and Structure-Activity Relationships of Novel Arylpiperazines as Potent and Selective Agonists of the Melanocortin Subtype-4 Receptor
The melanocortin receptors have been implicated as potential targets for a number of important therapeutic indications, including inflammation, sexual dysfunction, and obesity. We identified compound 1, an arylpiperazine attached to the dipeptide H-D-Tic-D-p-Cl-Phe-OH, as a novel melanocortin subtype-4 receptor (MC4R) agonist through iterative directed screening of nonpeptidyl G-protein-coupled receptor biased libraries. Structure-activity relationship (SAR) studies demonstrated that substitutions at the ortho position of the aryl ring improved binding and functional potency. For example, the o-isopropyl-substituted compound 29 (Ki = 720 nM) possessed 9-fold better binding affinity compared to the unsubstituted aryl ring (Ki = 6600 nM). Sulfonamide 39 (Ki = 220 nM) fills this space with a polar substituent, resulting in a further 2-fold improvement in binding affinity. The most potent compounds such as the diethylamine 44 (Ki = 60 nM) contain a basic group at this position. Basic heterocycles such as the imidazole 50 (Ki = 110 nM) were similarly effective. We also demonstrated good oral bioavailability for sulfonamide 39.
Richardson, Timothy I.,Ornstein, Paul L.,Briner, Karin,Fisher, Matthew J.,Backer, Ryan T.,Biggers, C. Kelly,Clay, Michael P.,Emmerson, Paul J.,Hertel, Larry W.,Hsiung, Hansen M.,Husain, Saba,Kahl, Steven D.,Lee, Jonathan A.,Lindstrom, Terry D.,Martinelli, Michael J.,Mayer, John P.,Mullaney, Jeffery T.,O'Brien, Thomas P.,Pawlak, Joseph M.,Revell, Kevin D.,Shah, Jikesh,Zgombick, John M.,Herr, R. Jason,Melekhov, Alex,Sampson, Peter B.,King, Chi-Hsin R.
p. 744 - 755
(2007/10/03)

Synthesis and characterization of 32 polybrominated diphenyl ethers
Polybrominated diphenyl ethers (PBDEs) are widely used as additive flame retardants in, for example, textiles, computers, television sets, and other electrical appliances. present also in humans. The environmental levels of the PBDEs are, however, still in general lower than those of polychlorinated biphenyls (PCBs). However, while the levels of PCBs generally are decreasing, those of the PBDEs are increasing in, for example, human milk. In the present study 32 individual PBDE congeners were synthesized and characterized. Physicochemical parameters including melting points and UV, 1H NMR, and mass spectra are reported Twenty-nine monobrominated to heptabrominated diphenyl ethers were synthesized by the couping between four diphenyliodonium salts and nine phenolates. One tetrabromodiphenyl ether and two hexabromodiphenyl ethers were synthesized by bromination of two different PBDEs. Twenty-one of the PBDEs and two of the iodonium salts, 2,2′,4,4′-tetrabromodiphenyliodonium chloride and 3,3′,4,4′-tatrabromodiphenyliodonium chloride, are to the authors' knowledge described for the first time. These synthesized reference compounds will aid in the identification and quantification of PBDEs present in environmental samples and will allow further assessment of PBDE toxicity.
Marsh, Goeran,Hu, Jiwei,Jakobsson, Eva,Rahm, Sara,Bergman, Aeke
p. 3033 - 3037
(2007/10/03)