ethyl 2-(benzyl-{2-[(4-cyanophenoxy)methyl]-2,4-dimethyl-3,4-dihydro-2H-1,4-benzoxazin-6-yl}amino)-2-oxoacetate 在
盐酸 、 ammonium acetate 作用下,
以
乙醇 为溶剂,
反应 24.5h,
以33%的产率得到ethyl 2-(benzyl-{2-[(4-carbamimidoylphenoxy)methyl]-2,4-dimethyl-3,4-dihydro-2H-1,4-benzoxazin-6-yl}amino)-2-oxoacetate