Preparation of t-butyl 4-diethylphosphono-3-oxobutanethioate and use in the synthesis of (E)-4-alkenyl-3-oxoesters and macrolides
作者:Steven V. Ley、Peter R. Woodward
DOI:10.1016/s0040-4039(00)95725-3
日期:1987.1
The preparation of t-butyl 4-diethylphosphono-3-oxobutanethioate (1) and Wadsworth- Emmons reaction with aldehydes and ketones is reported. Some of the products of these reactions were converted to unsaturated 3-oxomacrolides or 3-oxodiolides by transesterification in the presence of copper-(I)-trifluoroacetate.
A highlylinear-selectivehydroformylation of 1-alkenesusingformaldehyde without the direct use of syngas is described. One rhodium(I) complex catalyzes two processes in the overall hydroformylation of 1-alkenesusingformaldehyde as the syngassubstitute to give hydroformylated aldehydes with excellent regioselectivities. A high regioselectivity (linear/branched=up to 98/2) and chemical yield (up
Self-aldol condensation of an unmodified aldehyde has been effected by 3-N-methylaminoprophylated silica as a catalyst in supercritical carbon dioxide, to give an alpha,beta-unsaturated aldehyde (enal). Aldehydes having acid or base-sensitive substituents provided desired enals. (C) 2004 Elsevier Ltd. All rights reserved.
Preparation of β-ketomacrolactones and β-ketodiolides using S-t-butyl 3-oxobutanethioate and S-t-butyl 4-diethylphosphono-3-oxobutanethioate
作者:Paul M. Booth、Howard B. Broughton、Mark J. Ford、Christina M.J. Fox、Steven V. Ley、Alexandra M.Z. Slawin、David J. Williams、Peter R. Woodward
DOI:10.1016/s0040-4020(01)89218-8
日期:1989.1
LEY S. V.; WOODWARD P. R., TETRAHEDRON LETT., 28,(1987) N 3, 345-346