Selective C-C Bond Scission of Ketones via Visible-Light-Mediated Cerium Catalysis
作者:Yilin Chen、Jianbo Du、Zhiwei Zuo
DOI:10.1016/j.chempr.2019.11.009
日期:2020.1
catalytic manifold for the selectiveC–Cbond scission of ketones via the exploitation of the ligand-to-metal charge transfer (LMCT) excitation mode. Through a cooperative utilization of Lewis acid catalysis and LMCT catalysis, the C–Cbond of ketones could be selectively and effectively cleaved, enabling the installation of different functionalities at each carbon of the cleaved C–Cbond through a sequential
CARBAZOLE CARBOXAMIDE COMPOUNDS USEFUL AS KINASE INHIBITORS
申请人:Liu Qingjie
公开号:US20100160303A1
公开(公告)日:2010-06-24
Compounds having the formula (I), and enantiomers, and diastereomers, pharmaceutically-acceptable salts, thereof,
are useful as kinase modulators, including Btk modulation.
Simplified Procedure for TEMPO-Catalyzed Oxidation: Selective Oxidation of Alcohols, <font>α</font>-Hydroxy Esters, and Amides Using TEMPO and Calcium Hypochlorite
Abstract A wide range of primary and secondary multifunctional alcohols, α-hydroxyamides, and α-hydroxyesters were oxidized to their corresponding aldehydes, ketones, α-ketoamides, and α-ketoesters under mild reaction conditions using 2,2,6,6-tetramethylpiperidine-1-oxyl as a catalyst with calcium hypochlorite as an oxidant [TEMPO-Ca(OCl)2]. This simplified method does not require any transition metals
An efficient and facile method for the synthesis of a broad series of benzofurans and naphthofurans is described. The direct intramolecular cyclodehydration of aryloxyketones in the presence of titaniumtetrachloride affords the corresponding benzofurans and naphthofurans with good regioselectivity and yields.
A highly efficient enantioselective synthesis of chiral β‐aryloxy alcohols by the RuCl2[(S)‐SDP][(R,R)‐DPEN]} [(Sa,R,R)‐1a; SDP=7,7′‐bis(diarylphosphino)‐1,1′‐spirobiindane; DPEN=trans‐1,2‐diphenylethylenediamine] complex‐catalyzed asymmetric hydrogenation of racemic α‐aryloxydialkyl ketones via dynamickineticresolution (DKR) has been developed. Enantioselectivities of up to 99% ee with good to