Tetrahedron

Studies on oxygen heterocycles: Part-1: Acid catalysed and photochemical reactions of some aryldiazoketones

S Ghosh, I Datta, R Chakraborty, TK Das, J Sengupta…

Index: Ghosh, Somnath; Datta, Indira; Chakraborty, Rupak; Das, Tapas Kumar; Sengupta, Judhajit; Sarkar, Dipak Chandra Tetrahedron, 1989 , vol. 45, # 5 p. 1441 - 1446

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Citation Number: 19

Abstract

Trifluoroacetic acid catalysed reaction of 2-methoxyphenyldiazometliylketone (4 a), 2- acetoxyphenyldiazomethylketone (4 b) and 3-(2-anisyl)-∞-diazo-2-propanone (11) leads to the formation of coumaranone (6) and 3-chromanone (12), while 4-(2-anisyl)-∞-diazo-2- butanone (16) affords benzco [b]-1-oxepan-3-one (17) and 5-methoxy-2-tetralone (18) in moderate yield. The photochemical decomposition of the said diazoketoneg (4 a, 11 and ...

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