PHOTOREACTION OF N-2-ALKENYLTHIOPHTHALIMIDES : 1, 4-DITHIANE FORMATION BY INTRA- AND INTERMOLECULAR TWO-FOLD PHOTOREACTIONS AND THE X-RAY ANALYSIS OF THE DITHIANES

Abstract

Upon irradiation, N-2 alkenylthiophthalimides (8 and 9) effectively gave 1, 4-dithianes as a pair of stereoisomers. The structures of the products, 10b-i and 10b-ii, are confirmed on the basis of their X-ray analyses. Plausible reaction pathways are discussed.