The heteroleptic borane catalyst (C6F5)2B(CH2CH2CH2)BPin is found to hydrosilylatively reduce amides under mild conditions. Simple tertiary amides can be reduced using Me2EtSiH, whereas tertiary benzamides required a more reactive secondary silane, Et2SiH2, for efficient reduction. The catalytic system described exhibits exceptional chemoselectivity in the reduction of oligoamides and tolerates functionalities
发现在温和条件下,杂多
硼烷催化剂(C 6 F 5)2 B(CH 2 CH 2 CH 2)BPin可以氢化
硅烷化还原酰胺。使用Me 2 EtSiH可以还原简单的叔酰胺,而为了有效还原,叔苯甲酰胺需要更具反应性的仲
硅烷Et 2 SiH 2。所描述的催化体系在低酰胺的还原中表现出优异的
化学选择性,并耐受在相似条件下易于还原的官能团。