反应详情

A solution of 1.00 g of 2-(1-naphthylmethylene)succinic anhydride and 0.37 g of morpholine in 31 ml of dry dichloromethane was stirred for 2 hours at room temperature. The reaction mixture was evaporated under reduced pressure, and the residue was crystallized from a mixture of ethyl acetate, benzene and hexane (1:1:1) to obtain 1.10 g of 2-(1-naphthylmethylene)-3(morpholinocarbonyl)propionic acid as colorless crystals. A solution of 1.00 g of the propionic acid compound was hydrogenated over 0.1 g of a 10% palladium charcoal under a hydrogen atmosphere. After filtration of the catalyst, the filtrate was evaporated under reduced pressure. The residue was crystallized from hexane to give 0.90 g of 2-(1-naphthylmethyl)-3(morpholinocarbonyl)propionic acid as a white powder.

1. customThe reaction mixture was evaporated under reduced pressure
2. customthe residue was crystallized from a mixture of ethyl acetate, benzene and hexane (1:1:1)