Chiral Silver Phosphate Catalyzed Transformation of<i>ortho</i>-Alkynylaryl Ketones into 1<i>H</i>-Isochromene Derivatives through an Intramolecular-Cyclization/Enantioselective-Reduction Sequence
作者:Masahiro Terada、Feng Li、Yasunori Toda
DOI:10.1002/anie.201307371
日期:2014.1.3
The transformation of ortho‐alkynylaryl ketones through a cyclization/enantioselective‐reduction sequence in the presence of a chiral silver phosphate catalyst afforded 1H‐isochromene derivatives in high yield with fairly good to high enantioselectivity. An asymmetric synthesis of the 9‐oxabicyclo[3.3.1]nona‐2,6‐diene framework, which has been found in some biologically active molecules, is presented