Extensive Isomerization of Alkenes Using a Bifunctional Catalyst: An Alkene Zipper
作者:Douglas B. Grotjahn、Casey R. Larsen、Jeffery L. Gustafson、Reji Nair、Abhinandini Sharma
DOI:10.1021/ja073457i
日期:2007.8.1
Catalyzed movement of alkene double bonds up to 30 positions has been accomplished using a catalyst featuring a cationic CpRu fragment and bifunctional imidazolylphosphine. The basic nitrogen of the latter is thought to deprotonate coordinated alkene intermediates reversibly, facilitating isomerization between terminal and (E)-alkenes and accelerating conversions by factors of up to 1 x 10(4).
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