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A mechanistic approach to photochemical behavior of 4‐anisyl‐4‐methyl‐2,6‐diphenyl‐4 H ‐thiopyran‐1,1‐dioxide
Author(s) -
Rezanejadebardajee Ghasem,
Jafarpour Farnaz,
Pirelahi Hooshang
Publication year - 2006
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570430125
Subject(s) - chemistry , photoisomerization , thiopyran , excited state , photochemistry , molar ratio , medicinal chemistry , isomerization , organic chemistry , catalysis , physics , nuclear physics
Photoisomerization of 4‐anisyl‐4‐methyl‐2,6‐diphenyl‐4 H ‐thiopyran‐1,1‐dioxide is described in the presence of a sensitizer and new mechanistic features are proposed. The relative molar ratios of the stereoselective photoproducts compared in the presence and the absence of sensitizer in different concentrations of the starting material using hplc. The results observed are discussed on the basis of a triplet excited state thiadi‐π‐methane rearrangement.