Tetrahedron letters

Photochromic Behaviour of Bis [4-(N, N-dimethylamino) phenyl]-substituted 3 H-Naphtho [2, 1-b] pyran and 2 H-1-Benzopyran

…, R Guglielmetti, D De Keukeleire, W Saeyens…

Index: Harie, Guenaelle; Samat, Andre; Guglielmetti, Robert; De Keukeleire, Denis; Saeyens, Wim; Van Parys, Inge Tetrahedron Letters, 1997 , vol. 38, # 17 p. 3075 - 3078

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Citation Number: 20

Abstract

The photochromic behaviour of 3, 3-bis [4-(N, N-dimethylamino) phenyl]-3 H-naphtho [2, 1-b] pyran (2) and 2, 2-bis [4-(N, N-dimethylamino) phenyl]-2 H-1-benzopyran (3) has been studied by flash photolysis and compared to 3, 3-diphenyl-3 H-naphtho [2, 1-b] pyran (1) in order to delineate effects due to the N, N-dimethylamino groups.© 1997 Elsevier Science Ltd.

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