1989
DOI: 10.1007/bf00470019
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Oxidation of 2,4,6-triaryl-4H-thio(seleno)pyrans with selenium dioxide

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Cited by 2 publications
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“…The 1 H NMR and IR spectra agree with the previous data. 1 2 Benzoyl 3,5 diphenylselenophene (4) was obtained from 2,4,6 triphenylselenopyrylium perchlorate (1). The yield of the crude product was 88% (89% purity according to GC MS data).…”
Section: Methodsmentioning
confidence: 99%
“…The 1 H NMR and IR spectra agree with the previous data. 1 2 Benzoyl 3,5 diphenylselenophene (4) was obtained from 2,4,6 triphenylselenopyrylium perchlorate (1). The yield of the crude product was 88% (89% purity according to GC MS data).…”
Section: Methodsmentioning
confidence: 99%
“…There are several reports concerning the oxidation of mono and benzene ring fused six-membered heterocycles containing a chalcogen atom. The selenium dioxide oxidation of 4 H -thiopyrans [ 14 ] and 4 H -selenopyrans [ 14 ] produces a ring contraction to give hiophenes and selenophenes, respectively. The oxidation of dihydro-2 H -selenopyrans [ 15 ] with sodium periodate is also known to produce selenophenes.…”
Section: Introductionmentioning
confidence: 99%