Cobalt-catalyzed direct α-hydroxymethylation of amides with methanol as a C1 source
作者:Ben Ma、Rongxia Sun、Jingya Yang
DOI:10.1039/d1cc06501g
日期:——
A cobalt-catalyzed α-hydroxymethylation of amides with methanol as the C1 source has been developed.
一种以钴为催化剂,使用甲醇作为C1源进行酰胺的α-羟甲基化反应已经开发出来。
Process for preparation of o-(2,6-dichloroanilino)phenylacetic acid and
申请人:Ikeda Mohando Co., Ltd.
公开号:US04283532A1
公开(公告)日:1981-08-11
Disclosed is a process for the preparation of o-(2,6-dichloroanilino)phenylacetic acid (Diclofenac) or its pharmacologically acceptable acid addition salt, which comprises hydrolyzing an N,N-disubstituted-o-(2,6-dichloroanilino)phenylacetamide derivative with an alkali. Also a novel intermediate for use in the preparation of Diclofenac, that is, an N,N-disubstituted-o-halogenophenylacetamide in which the halogen is iodine or bromine, is disclosed.
benzylic position has been achieved via a 'transition-metal-free' intramolecular dehydrogenative coupling (IDC). The construction of 2-oxindole moieties was carried out through formation of carbon-carbon bonds using KOt-Bu-catalyzed one pot C-alkylation of beta-N-arylamido esters with alkyl halides followed by a dehydrogenative coupling. Experimental evidences indicated toward a radical-mediated path for
Development of catalytic deacylative alkylations (DaA) of 3-acyl-2-oxindoles: total synthesis of meso-chimonanthine and related alkaloids
作者:Nivesh Kumar、Mrinal Kanti Das、Santanu Ghosh、Alakesh Bisai
DOI:10.1039/c6cc10228j
日期:——
We present an effective deacylative alkylation strategy for the construction of a variety of 2-oxindoles bearing all-carbon quaternary center at the pseudobenzylic position. A wide variety of products with quaternary...