High diastereoface selection in an ester enolate addition to .alpha.-alkoxy aldehydes: stereoselective synthesis of .alpha.-methylene-.beta.-hydroxy-.gamma.-alkoxy esters
(Alkoxyallyl)sulfones as enal and enone β-anion equivalents. Synthesis of mono-, di- and trisubtituted furans
作者:Donald Craig、Christopher J. Etheridge
DOI:10.1016/s0040-4020(96)00932-5
日期:1996.11
Treatment of variously-substituted (alkoxyallyl)sulfones 1, 7-9 with strong base followed by aldehydes gives alcohol adducts 5. These may be converted into a wide range of substituted furans 6 by exposure to acid, or to silica gel in dichloromethane containing sulfuric acid in some cases. Copyright (C) 1996 Elsevier Science Ltd
High diastereoface selection in an ester enolate addition to .alpha.-alkoxy aldehydes: stereoselective synthesis of .alpha.-methylene-.beta.-hydroxy-.gamma.-alkoxy esters