Condensation of 1,2,3-benzotriazin-4(3H)-one (I) with ethyl bromoacetate (II) in refluxing butanone afforded the 3-(ethoxycarbonylmethyl) derivative (III). The ethyl ester group of (III) was then converted into the target amide by reaction with N,N-diethylethylenediamine (IV) in hot MeOH