Enantioselective Halocyclization Using Reagents Tailored for Chiral Anion Phase-Transfer Catalysis
作者:Yi-Ming Wang、Jeffrey Wu、Christina Hoong、Vivek Rauniyar、F. Dean Toste
DOI:10.1021/ja305795x
日期:2012.8.8
A chiral anion phase-transfer system for enantioselective halogenation is described. Highly insoluble, ionic reagents were developed as electrophilic bromine and iodine sources, and application of this system to o-anilidostyrenes afforded halogenated 4H-3,1-benzoxazines with excellent yield and enantioselectivity.