Synthesis of
<scp>4‐Trifluoromethylated</scp>
1,
<scp>3‐Butadienes</scp>
via Palladium Catalyzed Heck Reaction
作者:Yang Li、Meng Hao、Yu‐Chen Chang、Yuan Liu、Wen‐Fei Wang、Ning Sun、Wen‐Qing Zhu、Ziwei Gao
DOI:10.1002/cjoc.202100313
日期:2021.11
1,3-Butadiene plays a key role in modern synthetic chemistry and biochemistry because it is a key intermediate in the synthesis of many drugs. A new and effective method for the synthesis of 4-trifluoromethylated 1,3-butadiene through the fluorinated Heck reaction catalyzed by Pd(0) is described. Without additives, 1-chloro-3,3,3-trifluoropropene (an inexpensive CF3 structural unit that is harmless
1,3-丁二烯在现代合成化学和生物化学中起着关键作用,因为它是许多药物合成的关键中间体。描述了一种通过 Pd(0) 催化的氟化 Heck 反应合成 4-三氟甲基化 1,3-丁二烯的新方法。在没有添加剂的情况下,1-氯-3,3,3-三氟丙烯(一种对臭氧无害的廉价CF 3结构单元)与烯酰胺反应合成4-三氟甲基化1,3-丁二烯,具有良好的收率、高区域选择性和化学选择性,对炔、醛、酯基等底物官能团的耐受性强。