4'-N-(N'-2-acetoxyethyl)ethylenediamino-5-p-chlorophenylcarbamoyl-6-methyl-2-oxo-1,2-dihydropyrimidine 在
N,N-二乙基苯胺 、
三氯氧磷 作用下,
反应 6.0h,
以4 g的产率得到Acetic acid 2-{2-[2-chloro-5-(4-chloro-phenylcarbamoyl)-6-methyl-pyrimidin-4-ylamino]-ethylamino}-ethyl ester