The reactions of methyl (or ethyl) isothiocyanate with dianions (4, 5, and 6), which are readily derived from available cyclic thioureas (1, 2, and 3) with butyllithium, gave ring fused 1,3-disubstituted 1,3,5-triazine-2,4(1H,3H)-dithiones (7) and/or thiocarbamoyl derivative (8) as major products.
异硫氰酸甲酯(或乙基)与二价阴离子(4、5 和 6)(容易从可用的环状
硫脲(1、2 和 3)与丁基
锂衍生)反应,得到稠环 1,3-二取代的 1,3 ,5-三嗪-2,4(1H,3H)-二
硫酮 (7) 和/或
硫代
氨基甲酰基衍
生物 (8) 作为主要产物。