Treatment of N-(trans-styrylsulfonyl)- (1) and N-(4-phenyl-1,3-butadienylsulfonyl)-N′-methylthiourea (2), and the corresponding S-methylisothioureas (6 and 7), with strong base afforded the Smiles-type and Michael-type products. Effects of substituents at C-2 and nucleophiles on the products are discussed.
用强碱处理N-(反式
苯乙烯磺酰基)-(1)和N-(4-
苯基-
1,3-丁二烯基磺酰基)-N′-
甲基硫脲(2)以及相应的S-
甲基异
硫脲(6和7),可得到Smiles型和Michael型产物。讨论了C-2上的取代基和亲核试剂对产物的影响。