A General Strategy for Regiocontrol in Nickel-Catalyzed Reductive Couplings of Aldehydes and Alkynes
作者:Hasnain A. Malik、Grant J. Sormunen、John Montgomery
DOI:10.1021/ja102262v
日期:2010.5.12
a broad range of couplings, without relying on substrate biases or directing effects. The complementary use of small cyclopropenylidene carbene ligands or highly hindered N-heterocyclic carbene ligands allows the regiochemical reversal with unbiased internal alkynes, aromatic internal alkynes, conjugated enynes, or terminal alkynes.
已经开发出一种在醛-炔还原偶联中催化剂控制的区域选择性策略。该策略是第一个可以为广泛的耦合选择区域化学结果的策略,而不依赖于底物偏差或定向效应。小亚环丙烯卡宾配体或高度受阻的N-杂环卡宾配体的互补使用允许与无偏内炔、芳香内炔、共轭烯炔或末端炔进行区域化学逆转。