申请人:The United States of America as represented by the Secretary of Agriculture
公开号:US07534917B1
公开(公告)日:2009-05-19
A method of producing dicarboxylic acids (e.g., α,ω dicarboxylic acids) by reacting a compound having a terminal COOH (e.g., unsaturated fatty acid such as oleic acid) and containing at least one carbon-carbon double bond with a second generation Grubbs catalyst in the absence of solvent to produce dicarboxylic acids. The method is conducted in an inert atmosphere (e.g., argon, nitrogen). The process also works well with mixed unsaturated fatty acids obtained from soybean, rapeseed, tall, and linseed oils.
Catalyst-controlled reverse selectivity in C–C bond formation: NHC-Cu-catalyzed α-selective allylic alkylation with organolithium reagents
作者:Stefano F. Pizzolato、Massimo Giannerini、Pieter H. Bos、Martín Fañanás-Mastral、Ben L. Feringa
DOI:10.1039/c5cc01521a
日期:——
An efficient and highly [small alpha]-selective copper-catalyzed allylic alkylation of allylic halides with organolithium reagents is presented. The use of N-heterocyclic carbenes as ligands is key to reverse the common [small alpha]-selectivity...