Document Details

Document Type : Article In Journal 
Document Title :
Synthesis and photochromism of E,E-3,4-(3,5-dimethoxybenzylidene) succinic anhydride and its infrared active 2-dicyanomethylene derivative
Synthesis and photochromism of E,E-3,4-(3,5-dimethoxybenzylidene) succinic anhydride and its infrared active 2-dicyanomethylene derivative
 
Document Language : Arabic 
Abstract : The pale yellow fulgide 7 was prepared via two successive Stobbe condensations of one molar equivalent of diethylsuccinate and two molar equivalent of 3,5-dimethoxybenzaldehyde. The pale yellow fulgide 7, in both solid and solution, turned pink when irradiated with 366 nm light. The fulgide 7 was found to undergo a Knovenagel type reaction when condensed with malononitrile under basic condition to give, after ring closure, the dicyanomethylene derivative 14. The later on irradiation with 366 nm gave the infrared active 1,8a-DHN derivative 16. The 1,8a-DHN derivative of fulgide 7 (e.g. 15) showed remarkable positive solvatochromism as the solvent polarity is increased. (C) 2003 Elsevier Science B.V. All rights reserved. 
Journal Name : JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY 
Volume : 159 
Issue Number : 1 
Publishing Year : 2003 AH  
Added Date : Saturday, June 14, 2008 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
أ.د.عبد الله بن محمـد أحمـد عسيــــريAsiri AM Researcher  

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