3-(2-methyl-oxazol-4-yl)-benzoic acid methyl ester 、 Lithium Tert-butyl Acetate 以to give crude 3-oxo-3-(3-(2-methyl-oxazol-4-yl)-phenyl]-propionic acid tert -butyl ester (1.50 g) as a pale-yellow oil的产率得到3-oxo-3-[3-(2-methyl-oxazol-4-yl)-phenyl]-propionic acid tert-butyl ester