A Pd(0)-Catalyzed Direct Dehydrative Coupling of Terminal Alkynes with Allylic Alcohols To Access 1,4-Enynes
摘要:
A direct dehydrative coupling of terminal alkynes with allylic alcohols catalyzed by Pd(PPh3)(4) with an N,P-ligand assisted by Ti(OiPr)(4) has been developed. The coupling reaction tolerates various functional groups, providing a valuable synthetic tool to access 1,4-enynes.
Palladium-Catalyzed Alkynylation of Morita–Baylis–Hillman Carbonates with (Triisopropylsilyl)acetylene on Water
作者:Yangxiong Li、Li Liu、Delong Kong、Dong Wang、Weichun Feng、Tao Yue、Chaojun Li
DOI:10.1021/acs.joc.5b00728
日期:2015.6.19
Direct alkynylation of Morita–Baylis–Hillman carbonates with (triisopropylsilyl)acetylene catalyzed by a Pd(OAc)2–NHC complex was developed “on water” to give the corresponding 1,4-enynes. The significant effects of water amount in the solvent on further transformations of 1,4-enynes were investigated.