Design of a Bisamidinium Claisen Rearrangement Catalyst for Monodentate Substrates
作者:Venkatachalam R. Annamalai、Elizabeth C. Linton、Marisa C. Kozlowski
DOI:10.1021/ol8026945
日期:2009.2.5
A bisamidinium catalyst has been designed for the Claisen rearrangement. The primary design feature is a dual hydrogen bonding array that can coordinate a singular oxygen atom of the substrate. The ability to function as a dual hydrogen donor is key as the bisamidinium accelerates the Claisen rearrangement to a greater extent than Bronsted acids with lower pK(a) values.