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Photocyclization of methyl 2-arylthio- and 2-aryloxy-acetoacetates: A facile synthesis of benzoheterocycles

โœ Scribed by Tadashi Sasaki; Kenji Hayakawa; Hiroshi Ban


Book ID
103400113
Publisher
Elsevier Science
Year
1982
Tongue
French
Weight
391 KB
Volume
38
Category
Article
ISSN
0040-4020

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Irradiation of 2-alkoxy substituted ben- zophenones 2a-f and ethyl 2-aroyl-4-methylphenyloxyacetates 2g-i in benzene and in acetonitrile underwent photocyclization to substituted dihydrobenzofuranols 3a-i with 3a-c in very less yield being racemate and 3d-i in good yield being mixture of cis-trans i