Stereocomplementary asymmetric bioreduction of boron-containing ketones mediated by alcohol dehydrogenases
摘要:
Optically active boron-containing alcohols were prepared via the stereoselective reduction of the corresponding carbonyl compounds by alcohol dehydrogenases. Depending on the substrate, both (R)-alcohols and (S)-alcohols were obtained with excellent enantioselectivity (up to >99% ee) employing either ADH-A or LB-ADH. (C) 2011 Elsevier Ltd. All rights reserved.
[EN] PYRIMIDINE COMPOUNDS AS TUBERCULOSIS INHIBITORS<br/>[FR] COMPOSÉS PYRIMIDINE EN TANT QU'INHIBITEURS DE LA TUBERCULOSE
申请人:VERTEX PHARMA
公开号:WO2011019405A1
公开(公告)日:2011-02-17
The present invention relates to compounds II useful as inhibitors of treating tuberculosis. The invention also provides processes for preparing compounds of the invention.
Iridium-catalyzed borylation of thiophenes: versatile, synthetic elaboration founded on selective C–H functionalization
作者:Ghayoor A. Chotana、Venkata A. Kallepalli、Robert E. Maleczka、Milton R. Smith
DOI:10.1016/j.tet.2008.02.111
日期:2008.6
various substituted thiophenes to synthesize poly-functionalized thiophenes in good to excellent yields. Apart from common functionalities compatible with iridium-catalyzed borylations, additional functional group tolerance to acyl (COMe), and trimethylsilyl (TMS) groups was also observed. High regioselectivities were observed in borylation of 3-and 2,5-di-substituted thiophenes. Electrophilic aromatic
Aerobic Visible-Light-Driven Borylation of Heteroarenes in a Gel Nanoreactor
作者:Jorge C. Herrera-Luna、David Díaz Díaz、Alex Abramov、Susana Encinas、M. Consuelo Jiménez、Raúl Pérez-Ruiz
DOI:10.1021/acs.orglett.1c00451
日期:2021.3.19
Heteroarene boronate esters constitute valuable intermediates in modern organic synthesis. As building blocks, they can be further applied to the synthesis of new materials, since they can be easily transformed into any other functional group. Efforts toward novel and efficient strategies for their preparation are clearly desirable. Here, we have achieved the borylation of commercially available heteroarene
A C–H Borylation Approach to Suzuki–Miyaura Coupling of Typically Unstable 2–Heteroaryl and Polyfluorophenyl Boronates
作者:Daniel W. Robbins、John F. Hartwig
DOI:10.1021/ol301570t
日期:2012.8.17
A method for the synthesis of biaryls and heterobiaryls from arenes and haloarenes without the intermediacy of unstable boronic acids is described. Pinacol boronate esters that are analogous to unstable boronic acids are formed in high yield by iridium-catalyzed C-H borylation of heteroarenes and fluoroarenes. These boronates are stable in the solid state or in solution and can be generated and used in situ. They couple with aryl halides in the presence of simple palladium catalysts, providing a convenient route to biaryl and heteroaryl products that have been challenging to prepare via boronic acids.
Understanding the Activation of Air-Stable Ir(COD)(Phen)Cl Precatalyst for C–H Borylation of Aromatics and Heteroaromatics