Original scientific paper

Some Chemical Aspects of Tetrahydro-1-thiopyran-4-one Derivatives

Ahmed A. El-Barbary ; Department of Chemistry, Faculty of Science, University of Tanta, A. R. Egypt
Sohair M. Hussain ; Department of Chemistry, Faculty of Science, University of Cairo, Giza, A. R. Egypt
Mohamed M. S. El-Morsy ; Department of Chemistry, Faculty of Science, University of Cairo, Giza, A. R. Egypt

Abstract

3,5-Diarylmethylene-2,6-diphenyltetrahydrothiopyran-4-thiones,
2, reacted with two or four moles of bromine to form 3-aryimethylene
5-bromoarylmethylene- 2,6-dipheny1tetrahydrothiopyran-
-4-thione, 3, and 3-arylmethylene-5-bromoarylmethylene-2,6-dibromo- 2,6-diphenyltetrahydrothiopyran-4-thione, 5, respectively. Compound 2a reacted with amines giving 2,6-diphenyl-5-iminophenylmethyl- 3-phenylmethylenetetrahydrothiopyran-4-thiones, 6. Diphenydiazomethane and 9-diazofluorene converted 2a into 4-diphenylethylene- 2,6-dipheny1-3,5 diphenylmethylenetetrahydrothiopyran, 7, and 2,6-diphenyl-3,5-diphenylmethylene-4-(9-fluorenylidene) tetrahydrothiopyran,
8, respectively. Compounds 2 with copper-bronze afforded 3,3',5,5'-tetraarylmethylene-2,2' ,6,6'-tetraphenyl-Lr-thio- 4,4' dipyranylidenes.

Keywords

Hrčak ID:

177742

URI

https://hrcak.srce.hr/177742

Publication date:

22.5.1985.

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