作者:Daisuke Uraguchi、Yusuke Ueki、Takashi Ooi
DOI:10.1021/ja806311e
日期:2008.10.29
The cooperative asymmetric catalysis of chiral tetraaminophosphonium carboxylate (P,S)-1-OCOR has been established, and its synthetic utility has been successfully demonstrated by application to the highly enantioselective direct Mannich-type reaction of azlactones with N-sulfonyl imines. The present study stimulates the cultivation of the potential of the chiral quaternary onium salt catalysis by the structural modification of organic anion.