Diisopropylethylamine → tert-butyl {(3R)-1-[4-methyl-6-(1H-pyrazol-5-ylamino)pyrimidin-2-yl]piperidin-3-yl}carbamate

Participants

Reaction Conditions

Reaction Steps

To the mixture of 2-chloro-6-methyl-N-(1H-pyrazol-5-yl)pyrimidin-4-amine prepared in Referential Example 1 (25.5 mg) and (R)-3-(tert-butoxycarbonylamino)piperidine (50.9 mg) in DMSO (5 ml) was added DIEA (210.0 μL). And the mixture was heated to 110° C. under stirring for overnight. The resulting mixture was cooled to room temperature, poured into brine and extracted with EtOAc. The extract was washed with saturated aqueous solution of NaHCO3, dried over Na2SO4 and concentrated in vacuo. And the residue was purified with silica gel column chromatography (eluent: hexane/EtOAc=99/1˜0/100) to give tert-butyl {(3R)-1-[4-methyl-6-(1H-pyrazol-5-ylamino)pyrimidin-2-yl]piperidin-3-yl}carbamate (26.0 mg) as a pale yellow solid.

Provenance & Evidence