Regioselective installation of enolizable ketones and unprotected mercaptoacetic acid into olefins using GO as a phase transfer catalyst
作者:Prashant Shukla、Manorama Singh、Vijai K. Rai、Ankita Rai
DOI:10.1039/d1nj05870c
日期:——
We report herein an unprecedented conjugate addition of enolizable ketones and unprotected mercaptoacetic acid to electron-poor alkenes using graphene oxide as a phase transfer catalyst. The envisaged protocol is versatile and applicable to structurally different Michael acceptors such as α,β-unsaturatedaldehyde/ketone/acid/ester/amide/nitrile, and β-nitroalkene to afford their corresponding adducts
7-(2-amino-1-hydroxy-ethyl)-4-hydroxybenzothiazol-2(3H)-one-derivatives as beta2 adrenoreceptor agonists
申请人:Bailey Andrew
公开号:US20090221653A1
公开(公告)日:2009-09-03
The present invention provides compounds of formula (I) wherein the variables are as defined in the specification, processes for their preparation, pharmaceutical compositions containing them and their use in therapy.