Reductive Ring-Opening 1,3-Difunctionalizations of Arylcyclopropanes with Sodium Metal
作者:Hideki Yorimitsu、Shuo Wang、Atsushi Kaga
DOI:10.1055/s-0040-1706538
日期:2021.1
such as methoxypinacolatoborane, epoxide, oxetane, paraformaldehyde, or chlorotrimethylsilane, during the reductive ring opening event leads to the formation of 1,3-difunctionalized 1-arylalkanes by immediate trappings of the resulting two reactive carbanions. In particular, the ring-opening 1,3-diborylations of arylcyclopropanes afford 1,3-diborylalkanes with high syn selectivity.
钠分散促进芳基环丙烷的还原开环。还原性开环过程中存在抗还原亲电子试剂,例如甲氧基频哪醇硼烷、环氧化物、氧杂环丁烷、多聚甲醛或氯三甲基硅烷,导致通过立即捕获所得两个反应性碳负离子形成 1,3-双官能化 1-芳基烷烃. 特别是,芳基环丙烷的开环 1,3-二硼基化提供了具有高顺式选择性的 1,3-二硼基烷烃。