Synthesis and cycloadditions of 9H-furo[3,4-b][1]benzo(thio)pyran-9-ones: furan ring formation by a novel hydrolytically induced cycloreversion
作者:G.Elena Daia、Christopher D. Gabbutt、John D. Hepworth、B.Mark Heron、David E. Hibbs、Michael B. Hursthouse
DOI:10.1016/s0040-4039(02)00820-1
日期:2002.6
C-2 lithiation of acetals 2 followed by trapping with aldehydes gives 3. Subsequent unmasking of the acetal function provides furobenzo(thio)pyrans 4, cycloadditions of which have been investigated. (C) 2002 Elsevier Science Ltd. All rights reserved.