Dicyclohexylcarbodiimide → HCID 12493406, compound

Participants

Reaction Steps

To a solution of 4.5g of N,N'-dicyclohexylcarbodiimide in 100ml of dimethylformamide is added a solution of 2.2g of glycine hydrochloride in 2.2ml of water in a period of about 30 seconds under stirring and ice-cooling. Immediately a solution of 3.4g of 2-{[2-amino-5-bromo-α-(2-fluorophenyl)benzylidene]amino}ethanol in 10ml of tetrahydrofuran is added dropwise to the reaction mixture, and the mixture is stirred for further 3 hours at room temperature. After completion of the reaction, one liter of water is added to the reaction mixture which is extracted once with 100ml and four times with 50ml of benzene. The organic layer is washed with water, dried over anhydrous sodium sulfate, and the solvent is distilled off to give an oily substance, which is purified by chromatography of alumina column and then recrystallized from benzene-n-hexane (3:2 in volume) mixture yielding 2.3g of the desired product melting at 167°-168° C.

Provenance & Evidence