Trifluoroacetic acid → HCID 117700192, compound

Participants

Reaction Steps

To the solution of (3-oxa-9-aza-bicyclo[3.3.1]non-7-yl)-carbamic acid tert-butyl ester (PharmaBlock (Nanjing) R&D Co. Ltd, catalog number: PB05636) (106 mg, 0.44 mmol) and Compound C (100 mg, 0.22 mmol) in CH2Cl2 (5 mL) was added DIPEA (0.14 mL, 0.44 mmol) at room temperature. The reaction mixture was stirred overnight at room temperature, then diluted with EtOAc (60 mL). The organic layer was washed with sat. NH4Cl, sat. NaHCO3 and brine (20 mL) respectively. The organic layer was dried over Na2SO4, and then concentrated under reduced pressure to give the crude product which was dissolved in CH2Cl2 (5 mL). To the solution was added trifluoroacetic acid (2 mL) at 0° C. The mixture was stirred at room temperature for 2 hours. The solvent was removed under reduced pressure to give the crude (R)-6-(7-amino-3-oxa-9-aza-bicyclo[3.3.1]non-9-ylmethyl)-4-(2-chloro-4-fluoro-phenyl)-2-thiazol-2-yl-1,4-dihydro-pyrimidine-5-carboxylic acid methyl ester (Compound AP) which was directly used for next step.

Provenance & Evidence