作者:Margaret.A. O'leary、Dieter Wege
DOI:10.1016/s0040-4020(01)97701-4
日期:1981.1
The title carbenes, which in principle can all serve as precursors to the reactive hydrocarbon pseudoindene, have been generated by the photolysis of the sodium salts of the tosylhydrazones of (a) benzocyclobutene-1-carboxaldehyde, (b) 2-methylbenzocyclobutenone and (c) o-formylstyrene. Indene was formed in reactions (a) and (c): in the former case deuterium labelling experiments suggest a ring expansion
标题碳酰苯原则上可以全部用作反应性烃假茚的前体,是通过光解(a)苯并环丁烯-1-羧醛,(b)2-甲基苯并环丁烯酮和(c )o-甲酰基苯乙烯。茚在反应(a)和(c)中形成:在前一种情况下,氘标记实验表明是扩环机理,而不是假茚满中间体。在后一种情况下,氘标记和捕集实验涉及对称的异茚中间体,该中间体可以通过假茚或邻苯乙烯基卡宾的直接电环闭合而产生。