Reaction of 3-isothiocyanato-2-propeniminium perchlorates 1 with hydroxylamine gives 1-hydroxy-2(1H)-pyrimidine-2-thiones 2 which can be O-acylated. The resulting 1-acyloxy-2(1H)-pyrimidine-2-thiones 4 are novel precursors for organic radicals. Their photochemical homolysis is studied and affords disulfides 5, 2-alkylthiopyrimidines 6 and alkanes 7 and 8.
3-异
硫氰酸根合-2-亚丙基
高氯酸盐1与
羟胺的反应得到1-羟基-2(1H)-
嘧啶-2-
硫酮2,其可以被O-酰化。所得的1-酰氧基-2(1H)-
嘧啶-2-
硫酮4是有机基团的新型前体。其光
化学均裂进行了研究,得到二
硫化物5,2- alkylthiopyrimidines 6和
烷烃7和8。