Reaction of β-alkylthiopropionyl tetrafluoroborates with alkenes
摘要:
The reaction of beta-alkylthiopropionyl tetrafluoroborates with alkenes results in formation of 6-membered cyclic sulfonium salts. Succeeding cleavage of sulfonium salts by bases affords the corresponding 5-alkythiopent-1-en-3-ones.
Replacing dichloroethane as a solvent for rhodium-catalysed intermolecular alkyne hydroacylation reactions: the utility of propylene carbonate
作者:Philip Lenden、Paul M. Ylioja、Carlos González-Rodríguez、David A. Entwistle、Michael C. Willis
DOI:10.1039/c1gc15293a
日期:——
Propylene
carbonate is an excellent solvent for rhodium-catalysed intermolecular alkyne hydroacylation reactions, allowing a variety of β-S-aldehydes and alkynes to be combined in high yields, to deliver enone products. The effective use of propylene carbonate removes the need to employ dichloroethane as solvent.