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Photochemical reactions of 1‐methyl‐4,6‐diaryl‐2(1 H )‐pyrimidinones in the presence of thiols
Author(s) -
Nishio Takehiko,
Kato Michiyo
Publication year - 1997
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.5570340122
Subject(s) - chemistry , pyrimidinones , benzene , medicinal chemistry , adduct , irradiation , organic chemistry , physics , nuclear physics
Photochemical reactions of 1‐methyl‐4,6‐diaryl‐2(1 H )pyrimidinones 1a‐b in the presence of thiols 2 are described. Irradiation of 1‐methyl‐4,6‐diaryl‐2(1 H )‐pyrimidinones 1a‐b in benzene in the presence of thiols 2 gave the unexpected 2:1‐adducts, 3‐methyl‐4,6‐diaryl‐5‐aralkylthio‐6‐(1′‐methyl‐4′,6′‐diaryldihydro‐pyrimidin‐2‐on)yl‐1,3‐diazabicyclo[2.2.0]hexan‐2‐ones 3‐6, of 1 and 2, whereas irradiation of 1a‐b alone in benzene resulted in recovery of the unchanged 1a‐b.