Hydrochloric Acid → HCID 86646920, compound

Participants

Reaction Steps

(R)-[3-oxo-3-[1-(pyridin-2-ylcarbamoyl)-3-trifluoromethyl-5,6-dihydro-8H-imidazo[1,5-a]pyrazin-7-yl]-1-(2,4,5-trifluoro-benzyl)-propyl]-carbamic acid tert-butyl ester 31a (0.10 g, 0.16 mmol) and 2 mL of dichloromethane were added into the reaction flask. A solution of 2.7 N hydrochloric acid in 5 mL of methanol was added to the flask. The reaction mixture was reacted at room temperature overnight and monitored by thin layer chromatography until the disappearance of the starting materials. The reaction mixture was concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography to obtain the title compound (R)-7-[3-amino-4-(2,4,5-trifluoro-phenyl)-butyryl]-3-trifluoromethyl-5,6,7,8-tetrahydro-imidazo[1,5-a]pyrazine-1-carboxylic acid (pyridin-2-yl)amide dihydrochloride 31(80 mg, yield 95.2%) as a white solid.

Provenance & Evidence