quickly developed into a practical method to generate Cu−Si reagents. These silicon nucleophiles cleanly add to aldehyde-derived imine electrophiles to form α-silylated amines in protic media, and no carbon-to-nitrogen Brook-type rearrangement of the intermediate anion is observed. Aside from electron-withdrawing groups at the imine nitrogen atom, for example, SO2Tol and P(O)Ph2, previously delicate nitrogen
通过
铜催化的过渡
金属化对Si-B键的激活迅速发展为一种生成Cu-Si试剂的实用方法。这些
硅亲核试剂干净地添加到醛衍生的
亚胺亲电试剂中,从而在质子介质中形成α-甲
硅烷基化胺,并且未观察到中间阴离子的碳-氮布鲁克型重排。除了
亚胺氮原子上的吸电子基团(例如SO 2 Tol和P(O)Ph 2)外,还可以耐受先前精密的氮取代基,例如苯基或二苯甲基。相同的协议还允许史无前例地添加代表酮的
亚胺。