Regio- and Enantioselective α,γ-Dialkylation of α,β-Unsaturated Aldehydes Through Cascade Organocatalysis
作者:Mahesh S. Kutwal、Venkata M. D. Padmaja、Chandrakumar Appayee
DOI:10.1002/ejoc.202000245
日期:2020.5.14
Organocatalytic cascade α,γ‐dialkylation of α,β‐unsaturatedaldehydes is achieved with excellent enantioselectivity. Perfect regioselectivity is realized in the presence of trifluoroethanol. Substrates scope is established with a variety of α,β‐unsaturatedaldehydes and alkylating agents in excellent E/Z selectivity. The practicality of this methodology is demonstrated by the gram‐scale synthesis.