Ammonium formate → 1-Propyl-8-[6-(3-trifluoromethyl-benzylamino)-pyridin-3-yl]-1,7-dihydro-purin-6-one

HRID 536013Notes

Reaction equation

Cl[C:2]1[N:3]([CH2:30][CH2:31][CH3:32])[C:4](=[O:29])[C:5]2[NH:6][C:7]([C:11]3[CH:12]=[N:13][C:14]([NH:17][CH2:18][C:19]4[CH:24]=[CH:23][CH:22]=[C:21]([C:25]([F:28])([F:27])[F:26])[CH:20]=4)=[CH:15][CH:16]=3)=[N:8][C:9]=2[N:10]=1.C([O-])=O.[NH4+]>[Pd].CN(C=O)C>[CH2:30]([N:3]1[C:4](=[O:29])[C:5]2[NH:6][C:7]([C:11]3[CH:12]=[N:13][C:14]([NH:17][CH2:18][C:19]4[CH:24]=[CH:23][CH:22]=[C:21]([C:25]([F:26])([F:27])[F:28])[CH:20]=4)=[CH:15][CH:16]=3)=[N:8][C:9]=2[N:10]=[CH:2]1)[CH2:31][CH3:32]

Participants

Conditions

Temperature: 60 °C

Procedure

A mixture of 2-Chloro-1-propyl-8-[6-(3-trifluoromethyl-benzylamino)-pyridin-3-yl]-1,7-dihydro-purin-6-one (0.094 g, 0.2 mmol), Ammonium formate (0.256 g, 0.4 mmol), Pd/C (0.094 g) and DMF (4 ml) were stirred for 30 minutes at 60° C. The reaction mixture was cooled to room temperature and filtered through celite bed. The organic volatiles were evaporated and the residue was acidified with citric acid. The solid precipitated out was filtered to get pure 1-Propyl-8-[6-(3-trifluoromethyl-benzylamino)-pyridin-3-yl]-1,7-dihydro-purin-6-one as off white solid (16 mg, 40%). 1HNMR (400 MHz, DMSO d6): δ 0.84-0.90 (m, 3H); 1.66-1.73 (m, 2H); 3.94-3.99 (m, 2H); 4.65 (d, J=5.6 Hz, 2H); 6.66 (d, J=9.2 Hz, 1H); 7.55-7.79 (m, 4H); 8.13 (dd, J=8.8 Hz, 2.4 Hz, 1H); 8.30 (s, 1H); 8.78 (d, J=2.4 Hz, 1H); 13.56 (s, 1H)

Workup

temperatureThe reaction mixture was cooled to room temperature
filtrationfiltered through celite bed
customThe organic volatiles were evaporated
customThe solid precipitated out
filtrationwas filtered

Sources & evidence

ORD record: ord-f7c46d96efeb430ebe7740707811b04a
Source dataset: uspto-grants-2014_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08859566B2

Reaction notes

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