First Catalyzed Hydration of Haloalkynes by a Recyclable Catalytic System
作者:Huaxu Zou、Weibao He、Qizhi Dong、Ruijia Wang、Niannian Yi、Jun Jiang、Dongming Pen、Weimin He
DOI:10.1002/ejoc.201501198
日期:2016.1
The hydration of haloalkynes to give α-halomethyl ketones was achieved based on a combination of a Cu(OAc)2 catalyst and a TFA (trifluoroacetic acid) promoter. This is the first synthesis of chloro/bromo/iodo methyl ketones through a hydration reaction catalyzed by a recyclable catalytic system. The catalytic system has a wide substrate scope and excellent chemoselectivity, and the procedure can also
An efficient heterogeneous gold(I)-catalyzed hydration of haloalkynes leading to α-halomethyl ketones
作者:Sifan Hu、Dayi Liu、Chenyu Yan、Mingzhong Cai
DOI:10.1080/00397911.2018.1528616
日期:2018.12.2
Abstract A highly efficient heterogeneous gold(I)-catalyzedhydration of haloalkynes has been developed that proceeds smoothly under mild and neutral conditions and provides a general and practical route for the synthesis of a variety of α-halomethyl ketones with high atom-economy, excellent yield, and recyclability of the gold(I) catalyst. The presented method delivers an attractive alternative to
A general atom‐economical approach for the synthesis of α‐halomethyl ketones is demonstrated through Ce(SO4)2/acid co‐catalyzed hydration of a wide range of haloalkynes. The reactions are conducted under convenient conditions and provide products with excellent regioselectivity in good to excellent yields, with broad substrate scope. This protocol is an alternative to conventional α‐halogenation of
afford silyl‐substituted bicyclo[5.3.0]decanes, which were highly useful as synthetic intermediates. Stereochemical studies concerning the silylenolether moiety suggested that two types of reaction pathway for the formation of seven‐membered rings were present. The reaction of (Z)‐enolsilylethers proceeded through Cope rearrangement of cis‐divinylcyclopropane intermediates, and that of (E)‐enol silyl
[EN] GSK-3 INHIBITORS<br/>[FR] INHIBITEURS DE GSK-3
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2018098411A1
公开(公告)日:2018-05-31
The disclosure generally relates to compounds of formula (I), including their salts, as well as compositions and methods of using the compounds to treat disorders associated with GSK-3.