6-nitro-2,2-dimethyl-3-aminomethyl-4-(2-oxo-1,2-dihydropyridin-1-yl)-2H-1-benzopyran 、
异硫氰酸甲酯 在
乙醚 作用下,
以
二氯甲烷 为溶剂,
反应 26.0h,
以to give 0.34 g of 6-nitro-2,2-dimethyl-3-(N'-methylthioureido)methyl-4-(2-oxo-1,2-dihydropyridin-1-yl)-2H-1-benzopyran, m.p. 225° C.的产率得到6-nitro-2,2-dimethyl-3-(N'-methylthioureido)methyl-4-(2-oxo-1,2-dihydropyridin-1-yl)-2H-1-benzopyran