2,2-dimethyl-5-(p-methoxyphenyl)-6-thioureidoacetyl-4,4a,5,6-tetrahydro-m-dioxeno<4,5-c>pyrazol-2(H)-one 在
sodium acetate 作用下,
以
乙醇 为溶剂,
反应 2.0h,
以54%的产率得到6-(2-amino-5-thiazolyl)-2,2-dimethyl-5-(p-methoxyphenyl)-4,4a,5,6-tetrahydro-m-dioxeno<4,5-c>pyrazol-2(H)-one