Water → HCID 68514467, compound

Participants

Reaction Steps

4-Azido-N-ethylbenzamide (267 mg, 1.40 mmol) and ethyl benzoylacetate (0.316 ml, 1.75 mmol, 1.25 eq.) were dissolved in ethanol (8 ml), sodium ethoxide (122 mg, 1.75 mmol, 1.25 eq.) was added, and the mixture was stirred at room temperature for 30 min, and then at 60° C. for 13 hr. Water (20 ml) was added to the reaction mixture, ethanol was evaporated, and the residue was diluted with 2% aqueous sodium carbonate solution (20 ml) and washed with ethyl acetate-hexane (3:1, 40 ml). The organic layer was extracted with 2% aqueous sodium carbonate solution (20 ml). The aqueous layers were combined, acidified (pH<3) with 6N hydrochloric acid, and stood still at 0° C. The precipitate was collected by filtration, washed with water and dried to give the title compound as a pale-yellow powder (465 mg, 1.38 mmol, 98.8%).

Provenance & Evidence