Cyclopentenone formation via hydrogen activation in the reactions of chromium carbene complexes with alkynes
作者:Cynthia A. Challener、William D. Wulff、Benjamin A. Anderson、Steve Chamberlin、Katherine L. Faron、Oak K. Kim、Christopher K. Murray、Yao Chang Xu、Dominic C. Yang、Stephen D. Darling
DOI:10.1021/ja00057a020
日期:1993.2
alkyl chromium carbene complexes with alkynes have been found to give cyclopentenones. Mechanisms are proposed to account for the formation of these products that involve metal hydride intermediates. As has been previously reported for tungsten, molybdenum alkyl complexes have been found to give 1,3-dienes rather than cyclopentenones. The difference between chromium and molybdenum and tungsten may be
已发现烷基铬卡宾配合物与炔烃的反应得到环戊烯酮。提出了一些机制来解释这些涉及金属氢化物中间体的产物的形成。正如之前对钨所报道的那样,已经发现钼烷基配合物产生 1,3-二烯而不是环戊烯酮。铬与钼和钨之间的区别可能在于金属氢化物中间体可以在铬的情况下重新添加到烯烃中而不是进行还原消除