Intramolecular cyclizations of diphenyl ether, benzophenone, and related 2-sulfonylnitrenes

RA Abramovitch, CI Azogu, IT McMaster…

Index: Abramovitch,R.A. et al. Journal of Organic Chemistry, 1978 , vol. 43, p. 1218 - 1226

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Citation Number: 24

Abstract

Thermolysis of 2-phenoxybenzenesulfonyl azide gave 6H-dibenzo [b, f][1, 4, 5] oxathiazepine 5, 5-oxide (4)(the first seven-membered ring compound formed by intramolecular aromatic cyclization of a sulfonylnitrene) and other nitrene-derived products. On the other hand, diphenyl sulfide 2-sulfonyl azide (lb) gave some 3-phenylbenzo [l, 3, 2]- dithiazolium ylide 1, l-dioxide (lo), but no seven-membered ring compound. Thermolysis of ...

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