toluene-4-sulfonic acid (S)-5-fluoromethyl-7-oxo-2,3-dihydro-7H-oxazolo[3,2-a]pyrimidin-2-ylmethyl ester 、 2',3'-dichlorobiphenyl-4-ol 在
caesium carbonate 作用下,
以
乙腈 为溶剂,
反应 1.0h,
以53%的产率得到(S)-2-(2',3'-dichlorobiphenyl-4-yloxymethyl)-5-fluoromethyl-2,3-dihydro-oxazolo[3,2-a]pyrimidin-7-one