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
BANFI, L.;BERNARDI, A.;COLOMBO, L.;GENNARI, C.;SCOLASTICO, C., J. ORG. CHEM., 1984, 49, N 20, 3784-3790
作者:BANFI, L.、BERNARDI, A.、COLOMBO, L.、GENNARI, C.、SCOLASTICO, C.
DOI:——
日期:——
ANNUNZIATA, R.;CINQUINI, M.;COZZI, F.;GILARDI, A.;CARDANI, S.;POLI, G.;SC+, J. CHEM. SOC. PERKIN TRANS., 1985, 1, N 2, 255-259