Journal
MONATSHEFTE FUR CHEMIE
Volume 138, Issue 1, Pages 13-26Publisher
SPRINGER WIEN
DOI: 10.1007/s00706-006-0571-4
Keywords
alkynes; cyclizations; enones; heterocycles; sulfur compounds
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3-Oxo-1-pentene-4-ynes were converted with sodium sulfide or hydrogensulfide to give 2,6-disubstituted 2,3-dihydrothiopyran-4-one derivatives. The starting materials were prepared in two steps from terminal alkynes and alpha,beta-unsaturated aldehydes.
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