Regioselective Heck Couplings of α,<i>β</i>-Unsaturated Tosylates and Mesylates with Electron-Rich Olefins
作者:Anders Lindhardt Hansen、Troels Skrydstrup
DOI:10.1021/ol052136d
日期:2005.12.1
[chemical reaction: see text]. Highly regioselective Heck couplings of alpha,beta-unsaturated tosylate and mesylate derivatives with N-acyl N-vinylamines and vinyl ethers were achieved. Several 2-alkoxy-1,3-dienes and 2-acylamino-1,3-butadienes were synthesized in good yields using 1.5 mol % of Pd2(dba)3, 3 mol % of DPPF, and diisopropylethylamine in dioxane. When working with alpha,beta-unsaturated