(3S,4S)-6-acetyl-4-[(3-chloro-4-fluorobenzene)amido]-2,2-dimethyl-3,4-dihydro-2H-1-benzopyran-3-yl 2-{[(tert-butoxy)carbonyl](methyl)amino}acetate 在
盐酸 作用下,
以
1,4-二氧六环 为溶剂,
反应 1.0h,
以110 mg的产率得到(3S,4S)-6-acetyl-4-[(3-chloro-4-fluorobenzene)amido]-2,2-dimethyl-3,4-dihydro-2H-1-benzopyran-3-yl 2-(methylamino)acetate hydrochloride