Direct Conjugate Addition of Alkynes with α,β-Unsaturated Carbonyl Compounds Catalyzed by NCN-Pincer Ru Complexes
作者:Jun-ichi Ito、Kohei Fujii、Hisao Nishiyama
DOI:10.1002/chem.201203380
日期:2013.1.7
the direct conjugate additions of α,β‐unsaturatedcarbonylcompounds, including ketones, esters, and amides, as well as vinylphosphonates, giving various β‐alkynyl carbonyl and phosphonate compounds. A bis(oxazolinyl)phenyl (phebox)–Ru complex also catalyzes the asymmetric conjugate addition of an alkyne with a β‐substituted, α,β‐unsaturated ketone to produce a chiral β‐alkynyl ketone.
Indium(III) Chloride Catalyzed Conjugate Addition Reaction of Alkynylsilanes to Acrylate Esters
作者:Yan-li Xu、Ying-ming Pan、Pei Liu、Heng-shan Wang、Xiao-yan Tian、Gui-fa Su
DOI:10.1021/jo202628c
日期:2012.4.6
A novel and efficient procedure for the synthesis of δ,γ-alkynyl esters by the conjugateaddition of alkynylsilanes to acrylate esters in the presence of a catalytic amount of indium(III) chloride has been developed. This method provides a rapid and efficient access to substituted δ,γ-alkynyl esters.