gamma-Sulfur-substituted propargyl alcohols 1a-e and 1ij reacted with polyphosphoric acid trimethylsilyl ester (PPSE) to give the alpha,beta-unsaturated thioesters 3a-e and 3ij in good yields. However, the reactions of 3,3-dibutyl-1 -(phenylthio)propargyl alcohol (1k) and 1-(phenylthio)ethynyl- 1-cyclo alkanols 1l-n with PPSE gave the enyne sulfides 2k-n exclusively.
CUTTING, I.;PARSONS, P. J., TETRAHEDRON LETT., 1983, 24, N 41, 4463-4464
作者:CUTTING, I.、PARSONS, P. J.
DOI:——
日期:——
New transformations of substituted allene sulphoxides
作者:Ian Cutting、Philip J. Parsons
DOI:10.1016/s0040-4039(00)85927-4
日期:1983.1
The preparation and reactions of trimethylsilyl substituted allene sulphoxides are described. Allenes (2) rearrange on warming to give α,β-unsaturated thiol esters.