DAST-Mediated Cyclization of α,α-Disubstituted-α-acylaminoketones: Efficient and Divergent Synthesis of Unprecedented Heterocycles
作者:Aurélien Bigot、Judith Blythe、Chirag Pandya、Trixie Wagner、Olivier Loiseleur
DOI:10.1021/ol102454e
日期:2011.1.21
The design of a new potent nonsteroidal ecdysone agonist led to the discovery of a diethylaminosulfur trifluoride (DAST)-mediated cyclization of alpha,alpha-disubstituted-alpha-acylaminoketones. The resulting fluorooxazolines can be ring-opened or selectively substituted by a range of nucleophiles to provide in high yields a diverse array of unprecedented heterocyclic frameworks.