反应详情

A solution of ethyl 3-carbethoxymethyl-7,8-dimethoxypyrimido[4,5-b]quinolin-4(3H)-one-2-carboxylate (0.415 g., 1mM) and 2-(2-pyridyloxy)ethylamine (0.276 g., 2 mM) in chloroform (10 ml.) is refluxed for 24 hours. It is then cooled to room temperature and concentrated in vacuo. The residue, an oil, is crystallized by addition of ether until precipitation is complete. Yield = 0.41 g. (81%) of product; m.p. 170°-180° C.

1. concentrationconcentrated in vacuo
2. customThe residue, an oil, is crystallized by addition of ether until precipitation