- Copper-catalyzed and additive free decarboxylative trifluoromethylation of aromatic and heteroaromatic iodides
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A copper-catalyzed decarboxylative trifluoromethylation of (hetero)aromatic iodides has been developed. Importantly, this new copper-catalyzed reaction operates in the absence of any ligands and metal additives. The protocol shows good functional group tolerance and is compatible with heteroaromatic systems. The reaction proved scalable to a 15 mmol scale with increased yield. Finally, late-stage installation of the trifluoromethyl functionality afforded the N-trifluoroacetamide variant of the antidepressant agent, Prozac, demonstrating the applicability of the developed method.
- Johansen, Martin B.,Lindhardt, Anders T.
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supporting information
p. 1417 - 1425
(2020/03/03)
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- BTK Inhibitors and uses thereof
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The invention discloses a bruton's tyrosine kinase (BTK) inhibitor and use thereof. Specifically, the invention provides heteroaromatic compounds or stereoisomers, geometrical isomers, tautomers, racemates, nitrogen oxides, hydrates, solvates, metabolites and pharmaceutically acceptable salts or prodrugs thereof, and pharmaceutical compositions containing the heteroaromatic compounds; the invention also discloses use of the heteroaromatic compounds or the pharmaceutical compositions containing the heteroaromatic compounds in preparation of medicines; the medicines can be used for treating autoimmune diseases, inflammatory diseases or proliferative diseases.
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Paragraph 1635-1640
(2020/05/02)
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- Mechanism of Cu-catalyzed aryl boronic acid halodeboronation using electrophilic halogen: Development of a base-catalyzed iododeboronation for radiolabeling applications
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An investigation into the mechanism of Cu-catalyzed aryl boronic acid halodeboronation using electrophilic halogen reagents is reported. Evidence is provided to show that this takes place via a boronate-driven ipso-substitution pathway and that Cu is not required for these processes to operate: General Lewis base catalysis is operational. This in turn allows the rational development of a general, simple, and effective base-catalyzed halodeboronation that is amenable to the preparation of 125I-labeled products for SPECT applications.
- Molloy, John J.,O'rourke, Kerry M.,Frias, Carolina P.,Sloan, Nikki L.,West, Matthew J.,Pimlott, Sally L.,Sutherland, Andrew,Watson, Allan J. B.
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supporting information
p. 2488 - 2492
(2019/04/10)
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- Transition-metal-free hydrogenation of aryl halides: From alcohol to aldehyde
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A transition-metal-and catalyst-free hydrogenation of aryl halides, promoted by bases with either aldehydes or alcohols, is described. One equivalent of benzaldehyde affords an equal yield as that of 0.5 equiv of benzyl alcohol. The kinetic study reveals that the initial rate of PhCHO is much faster than that of BnOH, in the ratio of nearly 4:1. The radical trapping experiments indicate the radical nature of this reaction. Based on the kinetic study, trapping and KIE experiments, and control experiments, a tentative mechanism is proposed. As a consequence, a wide range of (hetero)aryl iodides and bromides were efficiently reduced to their corresponding (hetero)arenes. Thus, for the first time, aldehydes are directly used as hydrogen source instead of other well-established alcohol-hydrogen sources.
- Zheng, Hong-Xing,Shan, Xiang-Huan,Qu, Jian-Ping,Kang, Yan-Biao
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supporting information
p. 5114 - 5117
(2017/11/07)
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- A 1-alkyl-pyrazol-4-boronic acid frequency method for the synthesis of ester
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The invention belongs to the field of organic chemical synthesis and provides a synthetic method of 1-alkylpyrazole-4-boronic acid pinacol ester. The synthetic method comprises the following three steps: 1. reacting pyrazole with iodine and hydrogen peroxide to generate 4-iodopyrazole A; 2. reacting the 4-iodopyrazole with alkyl halide to obtain an intermediate B; 3. preparing a Grignard reagent of the raw material by using 1-alkyl-4-iodopyrazole as a raw material and adopting an isopropyl Grignard reagent exchange method at 0-30 DEG C, with BE001 as a boron reagent, and reacting to obtain the final product. The technological method is accessible in raw materials, simple and convenient to operate and lower in cost and is a proper method for preparing 1-alkylpyrazole-4-boronic acid pinacol ester compounds.
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Paragraph 0070-0071
(2017/03/14)
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- HETEROARYL COMPOUNDS AND PHARMACEUTICAL APPLICATIONS THEREOF
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The present invention provides herein is a heteroaryl compound or a stereoisomer, a geometric isomer, a tautomer, a racemate, an N-oxide, a hydrate, a solvate, a metabolite, a pharmaceutically acceptable salt or a prodrug thereof, as well as a pharmaceutical composition containing the compound disclosed herein. The present invention also provides herein is use of the compound or the pharmaceutical composition thereof disclosed herein in the manufacture of a medicine for treating autoimmune diseases or proliferative diseases.
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Paragraph 00555
(2016/01/25)
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- 2-(HETERO)ARYL-BENZIMIDAZOLE AND IMIDAZOPYRIDINE DERIVATIVES AS INHIBITORS OF ASPARAGIME EMETHYL TRANSFERASE
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Substituted benzimidazole and 3H-imidazo[4,5-b]pyridines or formula I: where X and Y respectively are selected from: (i) N and N; and (ii) N and CR4; A2 is selected from:, a C5 heteroarylene group, containing 2 or 3 ring heteroatoms, where the bonds to L1 and the core are β to one another; L1 is selected from: (i)A1-O-CH2-A2; (ii)A1-CH2-O-A2; (iii)A1-C(=O)-NH-A2; (iv)A1-CH(OH)-A2; (v)A1-CH2-NH-C(=O)-A2; (vi) A1-S-CH2-A2; (vii)A1- CH2-S-A2; (viii)A1-CH2-A2; and (ix)A1-CH(CH3)-O-A2; A1 is phenyl, optionally substituted by F or CF3; their use as pharmaceuticals, and in particular, in treating cancer and hemoglobinopathies.
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Page/Page column 160; 161
(2014/09/03)
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- [1,2,4]TRIAZOLO[4,3-B][1,2,4]TRIAZINE COMPOUND, PREPARATION METHOD AND USE THEREOF
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The present invention relates to a structurally novel [1,2,4]triazolo[4,3-b][1,2,4]triazine compounds represented by formula (I) or formula (II), pharmaceutically acceptable salts thereof, prodrugs thereof, hydrates or solvates thereof, and also relates to a preparation method of the compounds, a pharmaceutical composition comprising a therapeutically effective amount of the compounds, as well as the use thereof as protein tyrosine kinase inhibitors, particularly as c-Met inhibitors, in the preparation of medicaments for the prevention and/or treatment of diseases associated with c-Met abnormality.
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Paragraph 0109; 0110; 0111
(2013/11/05)
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- Reductive iodonio-Claisen rearrangement of iodothiophene diacetates with allylsilanes: Formal synthesis of Plavix
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Iodothiophene diacetates react with allyltrimethylsilanes in the presence of boron trifluoride diethyl etherate to afford corresponding ortho-allyliodothiophenes via reductive iodonio-Claisen rearrangement. This method has been successfully applied to the synthesis of Plavix, a blood clot inhibitor used to reduce the risk of heart attack and stroke.
- Nguyen, Hai,Khatri, Hem Raj,Zhu, Jianglong
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supporting information
p. 5464 - 5466
(2013/09/23)
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- Carbazole inhibitors of histamine receptors for the treatment of disease
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The present invention relates to carbazole compounds, pharmaceutical compositions comprising them, and methods which may be useful as inhibitors of H1R and/or H4R for the treatment or prevention of inflammatory, autoimmune, allergic, and ocular diseases.
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Page/Page column 56-57
(2012/01/04)
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- Green iodination of pyrazoles with iodine/hydrogen peroxide in water
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In this Letter, we describe a practical, green iodination of pyrazoles to form the corresponding 4-iodopyrazole derivatives. The reaction takes place in water, using only 0.5 equiv of iodine and 0.6 equiv of hydrogen peroxide, a system that generates water as the only reaction by-product.
- Kim, Mary M.,Ruck, Rebecca T.,Zhao, Dalian,Huffman, Mark A.
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p. 4026 - 4028
(2008/09/20)
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- NOVEL TUBULIN POLYMERISATION INHIBITORS
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The present invention relates to compounds of general formula (I) as tublin polymerisation inhibitors and methods for preparing such compounds.
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Page/Page column 63
(2008/06/13)
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- Structure-affinity relationships of the affinity of 2-pyrazolyl adenosine analogues for the adenosine A2A receptor
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The structure-affinity relationships of two novel 2-substituted adenosine series containing a substituted pyrazole attached at the N-1 or C-4 position for the adenosine (ADO) A2A receptor are described. Compounds in the 2-(N-1-pyrazolyl) adenos
- Palle, Venkata P.,Elzein, Elfatih O.,Gothe, Scott A.,Li, Zhihe,Gao, Zhenhai,Meyer, Stephanie,Blackburn, Brent,Zablocki, Jeff A.
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p. 2935 - 2939
(2007/10/03)
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- A mild and efficient method for the regioselective iodination of pyrazoles
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The iodination of N-H or N-benzylpyrazoles using elemental iodine in the presence of CAN as the in situ oxidant is a mild and efficient method to prepare 4-iodopyrazoles containing even electron-withdrawing substituents. The reaction is regioselective since the iodine atom preferred pyrazole instead of the benzyl group, and the 4-pyrazolic position instead of other possible positions in the heterocycle.
- Rodríguez-Franco, María Isabel,Dorronsoro, Isabel,Hernández-Higueras, Ana I,Antequera, Gema
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p. 863 - 865
(2007/10/03)
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- C-pyrazole 2A A receptor agonists
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2-adenosine C-pyrazole compositions having the following formula: and methods for using the compositions as A2A receptor agonists to stimulate mammalian coronary vasodilatation for therapeutic purposes and for purposes of imaging the heart.
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- Synthesis and 13C NMR Study of Some N-Substituted 4-Iodo- and 3,4-Diiodopyrazoles
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The synthesis of some novel N-1 substituted 4-iodo- and 3,4-diiodopyrazoles starting from the corresponding NH-pyrazoles is described.On the basis of their 13C nmr data and those of already known related congeners the influence of iodo- as well as N-1 substituents on pyrazole 13C chemical shifts and 13C, 1H spin coupling constants is investigated.
- Holzer, Wolfgang,Poecher, Ingrid
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p. 189 - 194
(2007/10/02)
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