Catalytic dehydrogenative Si–N coupling of pyrroles, indoles, carbazoles as well as anilines with hydrosilanes without added base
作者:C. David F. Königs、Maria F. Müller、Nuria Aiguabella、Hendrik F. T. Klare、Martin Oestreich
DOI:10.1039/c3cc38900f
日期:——
A base-free, catalytic protocol for the dehydrogenative Si-N coupling of weakly nucleophilic N-H groups of heteroarenes or aryl-substituted amines with equimolar amounts of hydrosilanes is reported. Cooperative Si-H bond activation at a Ru-S bond generates a silicon electrophile that forms a Si-N bond prior to the N-H deprotonation by an intermediate Ru-H complex, only releasing H(2).
报道了用于等芳烃或等摩尔量的氢化芳烃的杂芳烃或芳基取代的胺的弱亲核NH基团的脱氢Si-N偶联的无碱催化方案。在Ru-S键上协同激活Si-H键会生成亲电子体,该亲电体在中间Ru-H配合物使NH脱质子化之前形成Si-N键,仅释放H(2)。