Dichloromethane → HCID 89644203, compound

Participants

Reaction Conditions

Reaction Steps

The ethyl (2R)-2-[(3S)-3-(2-(dimethylamino)thiazol-5-ylsulphonylamino)-2-oxopyrrolidin-1-yl]-3-(7-methoxy-1-(tritylamino)isoquinolin-6-yl)propanoate obtained above (0.35 g, 0.44 mmol) is dissolved in 5 ml of dichloromethane. The medium is cooled to 0° C. and 0.5 ml of a 4N solution of hydrochloric acid in dioxane is added. The medium is stirred at 20° C. for 18 h. It is concentrated to dryness and the residue is triturated from ether and filtered off. It is purified on a column of silica (40 g, gradient CH2Cl2/MeOH/NH4OH; 100:0 to 90:10:0.5). The product thus obtained is dissolved in 5 ml of dichloromethane and salified with 0.5 ml of a 4N solution of hydrochloric acid in dioxane. The medium is concentrated and the residue is triturated from ether and dried over P2O5. 230 mg of a solid are obtained.

Provenance & Evidence