Photochromic Dihetarylethenes: XX. Synthesis and Photochromic Properties of Dithienylethenes with a Fixed Conformation

Author: Krayushkin M. M.   Ivanov S. N.   Lichitskii B. V.   Dubinov A. A.   Vorontsova L. G.   Starikov Z. A.   Martynkin A. Yu.  

Publisher: MAIK Nauka/Interperiodica

ISSN: 1070-4280

Source: Russian Journal of Organic Chemistry, Vol.40, Iss.1, 2004-01, pp. : 79-84

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Abstract

>A procedure was developed for the synthesis of bis(2,5-dimethyl-3-thienyl)ethenes with partially fixed molecular conformation, and their photochromic properties in solution were studied. The structure of photochromic 1-(2,5-dimethyl-3-thienyl)-7,9-dimethyl-5,6-dihydrothieno[3',4' : 3,4]pyrido[1,2-c][1,3]oxazol-3-one, as well as of 1-(2,5-dimethyl-3-thienyl)-7,9-dimethylthieno[3',4' : 3,4]pyrido[1,2-c][1,3]oxazol-3-one possessing no photochromic properties, was determined by X-ray analysis.

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