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■ Solid State Photodimerization of (E)-1-(3-Medthyl-4-nitroisoxazol-5-yl)-2-(2-thienyl)ehtene

Antonella Baracchi, Stefano Chimichi, Francesco De Sio, Cecilia Polo, Piero Sarti-Fantoni,* and Tomas Torroba

*Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Extremadura, Avenida de Elvas s/n, 06071-Badajoz, Spain

Abstract

Solid state irradiation of (E)-1-(3-methyl-4-nitroisoxazol-5-yl)-2-(2-thienyl)ethene (1) leads to (1α,2α,3β,4β)-1,3-bis(3-methyl-4-nitroisoxazol-5-yl)-2,4-bis(2-thienyl)cyclobutane (2) which is then oxidized to (1α,2α,3β,4β)-2,4-bis(2-thienyl)cyclobutane-1,3-dicarboxylic acid (3).