First Chelated Chiral N-Heterocyclic Bis-Carbene Complexes
- 25 March 2000
- journal article
- research article
- Published by American Chemical Society (ACS) in Organic Letters
- Vol. 2 (8) , 1125-1128
- https://doi.org/10.1021/ol005694v
Abstract
First chiral bidentate bis-carbene complex of Pd(II) prepared from a bis-imidazolium salt derived from (S)-2,2‘-bromomethyl-1,1‘-binaphthyl exists in both cis- and trans-square planar geometry. These and the corresponding trans-Ni(II) complexes are remarkably resistant to high temperature, air, water, and silica gel chromatography. The Pd complexes catalyze Heck reactions.Keywords
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