Mechanism of Migration of the Trimethylsilyl Group during Reactions of Methoxy[(trimethylsilyl)ethoxy]carbene with <i>N</i>-Phenylmaleimide and C<sub>60</sub>
作者:Pradeep K. Sharma、Małgorzata Dawid、John Warkentin、R. Michelle Vestal、Fred Wudl
DOI:10.1021/jo016019h
日期:2001.11.1
A novel migration of the trimethylsilyl group during reaction of methoxy[(trimethylsilyl)ethoxy]carbene with N-phenylmaleimide (NPM) and with C(60), reported earlier, was examined by means of deuterium labeling of the carbene. For the NPM case it was found that the CD(2)CH(2)SiMe(3) group, initially bound to oxygen, became the CH(2)CD(2)SiMe(3) group bound to carbon in the end product. Not only had
通过对卡宾进行氘标记,研究了甲氧基[(三甲基甲硅烷基)乙氧基]卡宾与N-苯基马来酰亚胺(NPM)和C(60)反应过程中三甲基甲硅烷基的新型迁移。对于NPM情况,发现最初绑定到氧的CD(2)CH(2)SiMe(3)组变成绑定到最终产品中碳的CH(2)CD(2)SiMe(3)组。三甲基甲硅烷基乙基不仅从氧迁移到碳,而且TMS基团也沿乙基链迁移了1,2。对于C(60)的情况,观察到CD(2)组的完全置乱,强烈暗示了负责产物形成的硅环丙烷碳正离子的参与。