反应详情

using ethyl 3-amino-2,4-difluorocrotonate and 4-chloro-2-fluoro-5-isopropoxyphenyl isocyanate there is obtained 3-(4-chloro-2-fluoro-5-isopropoxyphenyl)-5-fluoro-6-fluoromethyl-2,4(1H,3H)-pyrimidinedione, m.p. 152°-154° C.;