Hydrochloric Acid → HCID 18790638, compound

Participants

Reaction Steps

A mixture of 1 g 9-(methoxycarbonylmethylcarbamoyl)-5H,10H-imidazo[1,2-a]indeno[1,2-e]pyrazin-4-one, 50 ml of dioxane and 15 ml of concentrated hydrochloric acid is heated at reflux for 24 hours. The reaction mixture is concentrated on a rotary evaporator, ethyl ether is added to the evaporation residue and filtration is carried out. The solid obtained is triturated in 20 ml of distilled water, filtered, washed with distilled water (20 ml) and then with ethyl ether and dried at 60° C. under vacuum (1 mm Hg; 0.13 kPa). 0.8 g of N-[(4,5-dihydro-4-oxo-10H-imidazo[1,2-a]indeno[1,2-e]pyrazin-9-yl)carbonyl]glycine is obtained in the form of a yellow solid containing 0.66 mol of hydrochloric acid and melting above 260° C (Analysis; % Calculated C: 55.13, H: 3.66, Cl: 6.78, N: 16.07, O: 18.36; % Found C: 55.1, H: 3.6, Cl: 6.2, N: 15.8, O: 18.3).

Provenance & Evidence