(R,S)-3-(4-methanesulfonyloxymethylphenyl)butyric acid ethyl ester 、
1-[2-ethoxy-4-(6-oxo-1,6-dihydropyrimidin-5-yl)phenyl]-3-o-tolylurea 在
caesium carbonate 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 16.0h,
生成 (R,S)-3-(4-{5-[3-ethoxy-4-(3-o-tolylureido)phenyl]-6-oxo-6H-pyrimidin-1-ylmethyl}phenyl)butyric acid ethyl ester