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Citation: Liu Ruilan, Zhao Fuzhong, Deng Fuxi, Wang Zhenyi. INFLUENCE OF SUBSTITUENTS ON THE PROPERTY OF INDOLINOSPIROBENZOPYRAN PHOTOCHROMICS[J]. Chinese Journal of Applied Chemistry, ;1987, 4(3): 49-52. shu

INFLUENCE OF SUBSTITUENTS ON THE PROPERTY OF INDOLINOSPIROBENZOPYRAN PHOTOCHROMICS

1.
Department of chemistry, Northwest University, Xi'an

Corresponding author: Liu Ruilan,
Received Date: 28 April 1986
Available Online: 11 October 1986

17 indolinospirobenzopyran compounds were synthesized through the reaction of TTOI with salicylic aldehyde derivatives, 8 of them have not been reported in literature. In study the compounds were devided into two groups:A-compounds without nitrogroup and B-compounds which have NO₂ in molecule. The results showed that compounds of group A in general can not be purified from its alcoholic solution, while compounds of group B are easily precipited from alcohol solution with metal lustre and show a better photochromic property. A number of polymers have been tested for coatings for compounds of group B, all of them were bad in photochromism, except polyvinyl butyral.
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