The reaction of organozinc reagents with trifluoroacylated phosphonates: Synthesis of trifluoromethylated ?, ?-unsaturated esters with an active methylene moiety
作者:Yanchang Shen、Jiahong Ni
DOI:10.1002/hc.20018
日期:——
The consecutive reaction of phosphonates 1 with n-butyllithium, trifluoroacetic anhydride, and organozinc compounds gives trifluoromethylated α,β-unsaturated esters with an active methylene moiety and predominant Z-selectivity in 54–78% (3 steps) yields. © 2004 Wiley Periodicals, Inc. Heteroatom Chem 15:289–292, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc
膦酸酯 1 与正丁基锂、三氟乙酸酐和有机锌化合物的连续反应得到三氟甲基化的 α,β-不饱和酯,其具有活性亚甲基部分和主要的 Z 选择性,产率为 54-78%(3 步)。© 2004 Wiley Periodicals, Inc. 杂原子化学 15:289–292, 2004; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc.20018