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Volume :26 Issue : 2 1999      Add To Cart                                                                    Download

Synthesis and photochromic properties of E,E-Bis-ل-(2,5-dimethyl-3-furyl)ethylidenesuccinic anhydride and its 2-dicyaDomethylene derivative

Auther : ABDULLAH MOHAMED ASIRI

 Chemistry Department, Faculty of Science, King Abdul-Aziz University, Jeddah 21413, P.O. Box 9028, Saudi Arabia

ABSTRACT

The deep yellow fulgide 6 and its dicyanomethylene 9 underwent a conrotatory ring closure to the colored forms 7 and 10 respectively. The latter compounds revert back to the original forms on exposure to white light. The replacement of the carbonyl group by the dicyanomethylene group resulted in a large bathochromic shift of both the colored and uncolored forms 9 and 10 respectively.

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