Lewis Base Activation of Lewis Acids: Development of a Lewis Base Catalyzed Selenolactonization
作者:Scott E. Denmark、William R. Collins
DOI:10.1021/ol701617d
日期:2007.9.1
Lewis acids has been applied to the selenolactonization reaction. Through the use of substoichiometric amounts of Lewis bases with "soft" donor atoms (S, Se, P) significant rate enhancements over the background reaction are seen. Preliminary mechanistic investigations have revealed the resting state of the catalyst as well as the significance of a weak Bronsted acid promoter.