exo-dehydrogenation of alicyclic amine, (ii) hydrosilylation of resultant enamine, (iii) silylium-induced cis-β-amino elimination to open the ring skeleton, and (iv) hydrosilylation of terminal olefin. The present borane catalysis also works efficiently for the C-N bond cleavage of acyclic tertiary amines. On the basis of experimental and computational studies, the silicon atom was elucidated to play a pivotal
本文描述了
硼烷催化的α-甲基氮杂环的电影-甲
硅烷基化开环的开发。这种转化涉及四步级联过程:(i) 脂环胺的外脱氢,(ii) 所得烯胺的氢化
硅烷化,(iii) 甲
硅烷诱导的顺式-β-
氨基消除以打开环骨架,以及 (iv) 氢化
硅烷化端烯烃。本
硼烷催化对于无环叔胺的 CN 键断裂也有效。在实验和计算研究的基础上,阐明了
硅原子在 β-
氨基消除步骤中起关键作用。