Carbene chemistry. Part III. Reactions of diazomethyltrimethylsilane
作者:Robert N. Haszeldine、David L. Scott、Anthony E. Tipping
DOI:10.1039/p19740001440
日期:——
insertion (i) into the Si–H bond of trimethylsilane to give 2,2,4,4-tetramethyl-2,4-disilapentane, (ii) into a C–H bond of hexamethyldisiloxane to give 2,2,4,4,7,7-hexamethyl-3-oxa-2,4,7-trisilaoctane, and (iii) into the Si–H bond or a C–H bond of 2,2,4,6,6-pentamethyl-3,5-dioxa-2,4,6-trisilaheptane to give 2,2,4,6,6-pentamethyl-4-trimethylsilylmethyl-3,5-dioxa-2,4,6-trisilaheptane and 2,2,4,6,6,9,9-heptamethyl-3
重氮甲基三甲基硅烷的光解产生氮和三甲基硅碳烯(Me 3 Si·[图中未示出] H),其与重氮甲基三甲基硅烷,反式-丁-2-烯和乙烯反应生成反式-2,2,5,5-四甲基-2, 5-二硅三元-3-烯,反式-1,2-二甲基-3-三甲基甲硅烷基环丙烷和三甲基甲硅烷基环丙烷。卡宾不与2,3-二甲基丁-2-烯反应形成环丙烷,但经过插入(i)插入三甲基硅烷的Si-H键,得到2,2,4,4-四甲基-2,4-二硅戊烷,(ii)形成六甲基二硅氧烷的C–H键,得到2,2,4,4,7,7-六甲基-3-氧杂2,4,7-三硅辛烷,(iii)形成Si–H 2,2,4,6,6-五甲基-3,5-二氧杂2,4,6-三硅庚烷的碳氢键或CH键产生2,2,4,6,6-五甲基-4-三甲基甲硅烷基甲基-3,5-二氧杂-2,4,6-三硅庚烷和2,2,4,6,6,9,9-七甲基-3,5-二氧杂-2,4,6,9-四硅癸烷。