反应详情

34.1 g (0.396 mol) of acrylic acid methyl ester are added at room temperature to a solution of 32.25 g (0.18 mol) of 2-(2-aminoethyl)-benzo-1,4-dioxan [J. Augustin et al., J. Med. Chem. 8, 446 (1965)] in 250 ml of methanol. The reaction mixture is stirred for 6 hours at 50° and, after cooling, is concentrated by evaporation in vacuo. 57.9 g (91.5%) of N,N-bis(2-methoxycarbonylethyl)-N-[2-(benzo-1,4-dioxan-2-yl)ethyl]-amine are obtained in the form of a red oil.

1. temperatureafter cooling
2. concentrationis concentrated by evaporation in vacuo