Triethylborane Induced Radical Reaction of Ketene Silyl Acetals with Polyhalomethanes
作者:Katsukiyo Miura、Jiro Sugimoto、Koichiro Oshima、Kiitiro Utimoto
DOI:10.1246/bcsj.65.1513
日期:1992.6
acetal with tetrahalomethane or trihalomethane at room temperature in the presence of a catalytic amount of Et3B provides 3,3-dihaloacrylate or (E)-3-haloacrylate, respectively. On the other hand, a reaction at −23 °C mainly gives 3,3,3-trihalopropanoate or 3,3-dihalopropanoate.
在催化量的 Et3B 存在下,在室温下用四卤甲烷或三卤甲烷处理乙烯酮甲硅烷基缩醛,分别提供 3,3-二卤代丙烯酸酯或 (E)-3-卤代丙烯酸酯。另一方面,-23 °C 的反应主要产生 3,3,3-三卤代丙酸酯或 3,3-二卤代丙酸酯。