Ammonia → HCID 89783894, compound

HRID 1056319Notes

Reaction equation

HRID 1056319 reaction equation
F[C:2]1[C:3]([CH3:22])=[N:4][C:5]2[C:10]([N:11]=1)=[C:9]([C:12]1[NH:20][C:19]3[CH2:18][CH2:17][NH:16][C:15](=[O:21])[C:14]=3[CH:13]=1)[CH:8]=[CH:7][CH:6]=2.[NH3:23].O>CS(C)=O>[NH2:23][C:2]1[C:3]([CH3:22])=[N:4][C:5]2[C:10]([N:11]=1)=[C:9]([C:12]1[NH:20][C:19]3[CH2:18][CH2:17][NH:16][C:15](=[O:21])[C:14]=3[CH:13]=1)[CH:8]=[CH:7][CH:6]=2

Participants

5

Reactant 3

HCID 222AmmoniaHCID 962WaterHCID 897833202-(3-fluoro-2-methylquinoxalin-5-yl)-6,7-dihydro-1H-pyrrolo[3,2-c]pyridin-4(5H)-one

Product 1

HCID 89783894HCID 89783894, compoundYield 79.3%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Conditions

Temperature
90 °C

Procedure

A mixture of 2-(3-fluoro-2-methylquinoxalin-5-yl)-6,7-dihydro-1H-pyrrolo[3,2-c]pyridin-4(5H)-one (126) (0.30 g, 1.01 mmol) and ammonia (4.05 mL, 8.10 mmol) in DMSO (5 mL) was heated at 90° C. in a sealed tube for 16 h. The reaction mixture was cooled to RT, treated with water, and extracted with DCM (3×). The extracts were dried over Na2SO4, concentrated. The residue was purified by silica gel chromatography (0-10% MeOH/DCM) to give 2-(3-amino-2-methylquinoxalin-5-yl)-6,7-dihydro-1H-pyrrolo[3,2-c]pyridin-4(5H)-one (445a, 235 mg, 79%). m/z (ESI, +ve) 294 (M+H)+. A mixture of 2-(3-amino-2-methylquinoxalin-5-yl)-6,7-dihydro-1H-pyrrolo[3,2-c]pyridin-4(5H)-one (445a, 50 mg, 0.17 mmol) and Ac2O (0.016 mL, 0.17 mmol) in pyridine (2 mL) was heated at 50° C. for 16 h. It was concentrated under reduced pressure. The residue was purified by reverse phase HPLC. The pure fractions were combined and concentrated to dryness. The solid was dissolved in MeOH and neutralized by pass through Stratosphere SPE (PL-HCO3 MP-Resin) to give N-(3-methyl-8-(4-oxo-4,5,6,7-tetrahydro-1H-pyrrolo[3,2-c]pyridin-2-yl)quinoxalin-2-yl)acetamide as a tan solid (445) (10 mg, 17%). 1H NMR (400 MHz, DMSO-d6) δ ppm 13.21 (1H, br. s.), 10.22 (1H, s), 8.07-8.20 (1H, m), 7.71 (1H, dd, J=8.2, 1.2 Hz), 7.63 (1H, t, J=7.8 Hz), 7.09 (1H, d, J=2.3 Hz), 6.99 (1H, br. s.), 3.41-3.51 (2H, t, J=6.8 Hz), 2.94 (2H, t, J=6.8 Hz), 2.75 (3H, s), 2.36 (3H, s). m/z (ESI, +ve) 336 (M+H)+.

Workup

  1. temperatureThe reaction mixture was cooled to RT
  2. extractionextracted with DCM (3×)
  3. dry with materialThe extracts were dried over Na2SO4
  4. concentrationconcentrated
  5. customThe residue was purified by silica gel chromatography (0-10% MeOH/DCM)

Sources & evidence

ORD record
ord-84c57f96582e41ddbed85a197d1af59a
Source dataset
uspto-grants-2016_07
Patent number
US09394297B2

Reaction notes

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