Phthalaldehydic acid → HCID 18949905, compound

Participants

Reaction Conditions

Reaction Steps

9.7 ml (0.101 mole) of ethyl chlorocarbonate were dropwise added to a solution of 15.2 g (0.101 mole) of 2-carboxybenzaldehyde in 500 ml of chloroform and 14.1 ml (0.101 mole) of triethylamine, cooled to 0° C. After 45 minutes, a solution of 11.7 g (0.101 mole) of 2-chloroethylamine hydrochloride in 200 ml of chloroform and 14.1 ml (0.101 mole) of triethylamine was dropwise added thereto. The obtained solution was kept at 0°-5° C. for 5 hours. After warming to room temperature, the mixture was washed with water, 5% sodium bicarbonate, again with water and finally dried over sodium sulfate. 19 g of a crude product were obtained, which was purified on silica gel column eluting with methylene chloride-acetone 10/1 (v/v). 7 g of the title product were obtained; mp=133°-134° C. (methylene chloride).

Provenance & Evidence