Mechanistic Studies of Tetraphenylstibonium Iodide-Catalyzed Cycloaddition of Oxiranes with Heterocumulenes
作者:Masahiro Fujiwara、Akio Baba、Haruo Matsuda
DOI:10.1246/bcsj.63.1069
日期:1990.4
In the selective α-cleavage cycloaddition of oxiranes with heterocumulenes catalyzed by tetraphenylstibonium iodide, the direction of oxirane fission at first stage is not significant, while the difference of reaction behaviors of two antimony alkoxide intermediates (Ph4SbOCH2CH(R1)I and Ph4SbOCH(R1)CH2I), insertion of heterocumulenes and cyclization to original oxiranes, is responsible for the unusual
在四苯基碘化锑催化的环氧乙烷与杂枯草烯的选择性α-裂解环加成反应中,第一阶段环氧乙烷裂变的方向不显着,而两种烷氧基锑中间体(Ph4SbOCH2CH(R1)I和Ph4SbOCH(R) CH2I),插入杂草烯并环化成原始环氧乙烷,是导致异常选择性的原因。