N-allyl-N-(1,3-diethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)ethenesulfonamide 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
甲苯 为溶剂,
反应 1.0h,
以91%的产率得到2-(1,3-diethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)-2,3-dihydroisothiazole-1,1-dioxide