Development of the First Menthane-Based Chiral Bis(π-allylpalladium) Catalysis: Asymmetric Allylation of Imines
作者:Rodney A. Fernandes、Dipali A. Chaudhari
DOI:10.1002/ejoc.201101588
日期:2012.4
A new ethylidene menthane-basedchiralπ-allylpalladium complex catalyzes the asymmetricallylation of various imines with allyltributylstannane and 1 equiv. of water to give chiral homoallylamines in good yields and enantioselectivities. The reaction was carried out essentially under neutral conditions and displayed a good transfer of chiral information from the menthane skeleton through the formation
Menthane‐based η3‐bis‐π‐allylpalladium chloride dimer complexes with four chloride bridges were prepared for the first time. These complexes catalyze the asymmetricallylation of various imines with allyltributylstannane and one equivalent of water to give chiral homoallylamines in yields of 60–77 % and enantioselectivity up to er = 93:7.