Sodium hydride → HCID 19896208, compound

Participants

Reaction Conditions

Reaction Steps

2.0 g of sodium hydride (purity: 55%) was added to 100 ml of dimethylformamide, followed by dropwise addition of 7.9 g of ethyl 3-amino-3-(2-chlorophenyl)-2-propenoate to the solution with stirring at 0° C. The resulting solution was stirred at room temperature for 15 minutes and added with 8.7 g of ethyl 4-trifluoromethoxyphenylcarbamate. The solution was further stirred at 100° C. for 4 hours. Then the solvent was distilled away under reduced pressure and the residue was dissolved in 200 ml of water and washed twice with diethyl ether. This aqueous solution was added to a mixed solution of 100 g of ice and 50 ml of concentrated hydrochloric acid. The precipitated crystals were filtered out and dried under reduced pressure to obtain 10.7 g of a crude product. This crude product was washed with heated diisopropyl ether and dried to obtain 9.7 g of the objective compound.

Provenance & Evidence