S. Matsumoto, T. Kishimoto, K. Ogura
Feb 5, 2002
Citations
0
Influential Citations
11
Citations
Journal
Chemistry Letters
Abstract
Reaction of 1-(1H-3-indolyl)-4-(methylthio)-2-(p-tolylsulfonyl)-1,3-butadienes (1) with iodine was accompanied with an unusual 1,2-migration of the sulfonyl group to give an abnormal cyclization product (3). This 1,2-migration reaction was brought about by the action of hydrogen polyiodides that are produced from excess I2 and EtSH. It is noteworthy that the reaction of 1 with HI resulted in formation of a normal product (2).