2-Phenylthioallyl alcohols and their use in the synthesis of 1,4-diketones and cyclopentenones
Abstract
1-Phenylthiovinyl-lithium adds to n-hexanal to give the allylic alcohol (II) that undergoes the Carroll and Claisen rearrangement with formation of the carbonyl compounds (IV) which can be converted into dihydrojasmone (VIa) and 2-n-pentylcyclopent-2-enone (VIb) by hydrolysis and cyclisation.