The ethyl oxazole-4-carboxylate was directly and regioselectively alkenylated, benzylated and alkylated with alkenyl-, benzyl-, allyl- and alkyl halides in the presence of catalytic amounts of palladium acetate with caesium carbonate using Buchwald's JohnPhos ligand.
这 恶
唑-4-羧酸乙酯 在催化量的
四氢呋喃存在下,用烯基-,苄基-,烯丙基-和烷基卤化物直接和区域选择性地进行烯基化,苄基化和烷基化。
醋酸钯 使用布赫瓦尔德(Buchwald)的JohnPhos
配体制备
碳酸铯