Tetrahedron

Photochemical behaviour of 3.4-epoxyprecocene-I and related epoxychromans

G Ariamala, KK Balasubramanian

Index: Ariamala, G.; Balasubramanian, K. K. Tetrahedron, 1989 , vol. 45, # 12 p. 3769 - 3774

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Citation Number: 5

Abstract

A systematic study of photochemical behaviour of 3, 4-epoxyprecocene-I and related epoxychromans was undertaken. Upon irradiation in acetone or cyclohexane, 3, 4- epoxyprecocene-I 1 was found to undergo photoisomerisation to the corresponding 3- chromanone 2. In contrast, the photochemical behaviour of analogous 3, 4-dihydro-3, 4- epoxy-2H-1-benzopyrans 3 was found to be dependent upon the nature of solvent. ...

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