N,N-Diethyl-2-propanamine → (S)-N-(1-(imidazo[1,2-a]pyrazin-8-yl)pyrrolidin-3-yl)-1-phenyl-1H-1,2,4-triazole-3-carboxamide

HRID 1755268Notes

Reaction equation

HRID 1755268 reaction equation
Cl.[N:2]1[CH:3]=[CH:4][N:5]2[CH:10]=[CH:9][N:8]=[C:7]([N:11]3[CH2:15][CH2:14][C@H:13]([NH2:16])[CH2:12]3)[C:6]=12.[C:17]1([N:23]2[CH:27]=[N:26][C:25]([C:28](O)=[O:29])=[N:24]2)[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1.C(N(CC)C(C)C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C.C(OCC)(=O)C>[N:2]1[CH:3]=[CH:4][N:5]2[CH:10]=[CH:9][N:8]=[C:7]([N:11]3[CH2:15][CH2:14][C@H:13]([NH:16][C:28]([C:25]4[N:26]=[CH:27][N:23]([C:17]5[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=5)[N:24]=4)=[O:29])[CH2:12]3)[C:6]=12

Participants

7

Reactant 4

HCID 521913N,N-Diethyl-2-propanamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 123160561-Phenyl-1H-1,2,4-triazole-3-carboxylic acidHCID 86720541(5)-1-(Imidazo[1,2-a]pyrazin-8-yl)pyrrolidin-3-amine hydrochloride salt

Product 1

HCID 75202690(S)-N-(1-(imidazo[1,2-a]pyrazin-8-yl)pyrrolidin-3-yl)-1-phenyl-1H-1,2,4-triazole-3-carboxamideYield 54%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a suspension of the above (S)-1-(imidazo[1,2-a]pyrazin-8-yl)pyrrolidin-3-amine hydrochloride salt (84 mg, 0.3 mmol) and 1-phenyl-1H-1,2,4-triazole-3-carboxylic acid (57 mg, 0.3 mmol) in DMF (5 mL) was added diethylisopropyl amine (650 mg, 5 mmol), followed by HATU (120 mg, 0.31 mmol). The resulting solution was stirred at room temperature for 1 h. The reaction mixture was diluted with ethyl acetate and washed with saturated aqueous solutions of KH2PO4 and NaHCO3, followed by brine. The organic layer was concentrated in vacuo and the residue purified by silica gel flash chromatography (2 to 5% MeOH in CH2Cl2 as eluent) followed by reverse phase HPLC (acetonitrile-H2O with 0.1% TFA as eluent) to give 60 mg of the title compound (54% yield) as white solid. MS: (ES) m/z calculated for C19H18N8O [M+H]+ 375.2, found 375.2.

Workup

  1. washwashed with saturated aqueous solutions of KH2PO4 and NaHCO3
  2. concentrationThe organic layer was concentrated in vacuo
  3. customthe residue purified by silica gel flash chromatography (2 to 5% MeOH in CH2Cl2 as eluent)

Sources & evidence

ORD record
ord-00782b174223426abf95610fce992a01
Source dataset
uspto-grants-2015_10
Patent number
US09169261B2

Reaction notes

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