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

✍ Scribed by V Rossollin; V Lokshin; A Samat; R Guglielmetti

Book ID
104205731
Publisher
Elsevier Science
Year
2003
Tongue
French
Weight
209 KB
Volume
59
Category
Article
ISSN
0040-4020

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✦ Synopsis

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-b-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.

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