Tetrahedron

Reinvestigation of prototropic photochromism: 3-benzoyl-2-benzylchromones

V Rossollin, V Lokshin, A Samat, R Guglielmetti

Index: Rossollin; Lokshin; Samat; Guglielmetti Tetrahedron, 2003 , vol. 59, # 39 p. 7725 - 7731

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Citation Number: 18

Abstract

The synthesis of a series of new nine 3-benzoyl-2-benzylchromones is developed through a classical and an optimized Kostanecki–Robinson method involving an o-hydroxyphenyl-β- diketone and an acid anhydride. The different spectrokinetic studies carried out in solution and in polymer matrixes have highlighted the main structure/photochromic parameters relationships and the influence of the medium on the photochromic properties.