Catalytic Asymmetric Conjugate Addition of Carboxylic Acids via Oxa-Michael Reaction of Peroxy Hemiacetals followed by Kornblum DeLaMare Fragmentation
作者:Biswajit Parhi、Sanjay Maity、Prasanta Ghorai
DOI:10.1021/acs.orglett.6b02463
日期:2016.10.21
Disclosed herein an overall methodology constitutes an equivalent to the long sought after enantioselective intramolecular oxa-Michael (IOM) reaction of carboxylic acids. An organocatalyzed IOM reaction of in situ formed peroxy hemiacetals followed by a Kornblum DeLaMare type rearrangement cascade provides a broad class of chiral lactones in good yields and with excellent enatioselectvities. Remarkably