New synthesis of chalcogenolactones. 1H, 3H??benzo [c] selenophen??1??one, 1H, 3H??benzo [c] tellurophen??1??one and the related 3, 4??dihydro??1H??2??benzoselenin??1 …

M Loth??Compère, A Luxen, P Thibaut…

Index: Loth-Compere, M.; Luxen, A.; Thibaut, Ph.; Christiaens, L.; Guillaume, M.; Renson, M. Journal of Heterocyclic Chemistry, 1981 , vol. 18, p. 343 - 345

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Citation Number: 9

Abstract

Abstract The synthesis of three new basic heterocyclic systems namely, 1H, 3H-benzo [c] tellurophen-1-one (2-tellurophthalide), 3, 4-dihydro-1H-2-benzoselenin-1-one (3, 4-dihydro- 2-isoselenocoumarin) and 3, 4-dihydro-1H-2-benzotellurin-1-one (3, 4-dihydro-2- isotellurocoumarin), is reported through the cyclisation of o-(bromoalkyl) benzoyl chlorides.