Page 1. CHEMISTRY LETTERS, pp. 1461-1462, 1983. (C) The Chemical Society of Japan 1983 A NOVEL PHOTOREARRANGEMENT OF 2, 5-DIARYL-I, 4-DITHIIN-1, 1-DIOXIDE ACCOMPANIED BY EXTRUSION OF SULFUR DIOXIDE Keiji KOBAYASHI* and Kiyoshi MUTAI Department of Chemistry, College of Arts and Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153 Photolysis of the title compound afforded 2, 5-diarylthiophene. ...