Hydrochloric Acid → HCID 9936285, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of 11 g (23 mmol) of (R)-2-(4-amidinophenylaminomethyl)-1-methyl-5-[1-(carboxymethylamino)-1-(pyrrolidinocarbonyl)-ethyl]-benzimidazole in 88 mL methanol is heated to 35° C. to 40° C. To this suspension are added 8.4 mL of a 2.75 molar solution of hydrogen chloride (23 mmol) in ethyl acetate. The starting material is dissolved and the hydrochloride begins to crystallise out. The suspension is cooled to 20° C. and suction filtered. The filter cake is dried in the vacuum drying cupboard at 35° C. 9.2 g (78% of theory) of the title compound are obtained as a crystalline solid. To eliminate traces of methanol 8 g of the title compound obtained above are suspended in 80 mL of ethanol and stirred for 30 minutes at 50° C. The suspension is cooled to 20° C. and suction filtered. The filter cake is washed with ethanol and dried in the vacuum drying cupboard at 35° C.

Provenance & Evidence