反应详情

using isopropyl 2-chloro-4-fluoro-5-[3,6-dihydro-4,5-dimethyl-2,6-dioxo-1(2H)-pyrimidinyl]-benzoate in dimethylformamide there is obtained isopropyl 2-chloro-4-fluoro-5-[3,5-dihydro-3,4,5-trimethyl-2,6-dioxo-1(2H)-pyrimidinyl]-benzoate, m.p. 119°-120° C.,