L-Tartaric acid → HCID 49856396, compound

Participants

Reaction Conditions

Reaction Steps

6-(1H-Imidazol-1-yl)-2-phenylquinazoline, 500 mg (1.8 mmol), is dissolved in 50 mL of nitromethane at reflux, with stirring and under a stream of nitrogen, 300 mg of L-tartaric acid are added, the mixture is stirred for a few minutes, it is filtered under nitrogen and the filtrate is heated to 60° C., evaporating off the solvent under a gentle vacuum, with stirring and under a stream of nitrogen, down to about ½ of the volume, and is then allowed to cool to 0° C. under nitrogen, stirred overnight at room temperature, and then filtered and dried at 30° C., 20 mmHg, for 24 hours. 520 mg of product are obtained in the form of yellow crystals, KF<0.5%, Calculated for C17H12N4.C4H6O6: C, 59.71; H, 4.30; N, 13.26. found: C, 59.76; H, 4.34; N, 13.22. XRPD form D. Form D heated at 40° C., 85% RH for 7 days gives an XRPD corresponding to form A, and an amorphous product when heated at 90° C. for 12 hours.

Provenance & Evidence