Syntheses of 2,5-Disubstituted Dihydrofurans from γ-Substituted Chiral Allenamides
作者:Craig R. Berry、Richard P. Hsung、Jennifer E. Antoline、Matthew E. Petersen、Rameshkumar Challeppan、Jessica A. Nielson
DOI:10.1021/jo0503411
日期:2005.5.1
Details of a synthesis of dihydrofurans using γ-substituted chiral allenamides are described here. Some transformations of these dihydrofurans are also examined including a highly stereoselectivedihydroxylation and a rare account of a Lewis acid-mediated removal of an N-acyl substituent at the anomeric carbon of a tetrahydrofuran ring system. These studies provide further support for the synthetic