N-bromobutanimide → tert-Butyl (1S,2R)-2-(7-bromo-4-(1-methyl-1H-pyrazol-4-yl)-3-oxo-2,3-dihydro-1H-pyrrolo[3,4-c]pyridin-6-ylamino)cyclohexylcarbamate

HRID 711549Notes

Reaction equation

HRID 711549 reaction equation
[CH3:1][N:2]1[CH:6]=[C:5]([C:7]2[C:12]3[C:13](=[O:16])[NH:14][CH2:15][C:11]=3[CH:10]=[C:9]([NH:17][C@@H:18]3[CH2:23][CH2:22][CH2:21][CH2:20][C@@H:19]3[NH:24][C:25](=[O:31])[O:26][C:27]([CH3:30])([CH3:29])[CH3:28])[N:8]=2)[CH:4]=[N:3]1.[Br:32]N1C(=O)CCC1=O>C(Cl)Cl>[Br:32][C:10]1[C:11]2[CH2:15][NH:14][C:13](=[O:16])[C:12]=2[C:7]([C:5]2[CH:4]=[N:3][N:2]([CH3:1])[CH:6]=2)=[N:8][C:9]=1[NH:17][C@@H:18]1[CH2:23][CH2:22][CH2:21][CH2:20][C@@H:19]1[NH:24][C:25](=[O:31])[O:26][C:27]([CH3:28])([CH3:30])[CH3:29]

Participants

4

Reactant 2

HCID 67184N-bromobutanimideHCID 86654709tert-Butyl (1S,2R)-2-(4-(1-methyl-1H-pyrazol-4-yl)-3-oxo-2,3-dihydro-1H-pyrrolo[3,4-c]pyridin-6-ylamino)cyclohexylcarbamate

Product 1

HCID 86654737tert-Butyl (1S,2R)-2-(7-bromo-4-(1-methyl-1H-pyrazol-4-yl)-3-oxo-2,3-dihydro-1H-pyrrolo[3,4-c]pyridin-6-ylamino)cyclohexylcarbamateYield 93.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Conditions

Temperature
0 °C

Procedure

To a round bottomed flask was added tert-butyl (1S,2R)-2-(4-(1-methyl-1H-pyrazol-4-yl)-3-oxo-2,3-dihydro-1H-pyrrolo[3,4-c]pyridin-6-ylamino)cyclohexylcarbamate (124 mg, 0.291 mmol) in DCM (30 mL). The resulting white suspension was heated with a heat gun while stirring until all the starting material was dissolved. The solution was cooled to 0° C., and while stirring, 1-bromopyrrolidine-2,5-dione (51.7 mg, 0.291 mmol) was added. The reaction mixture was allowed to warm to RT and was stirred for 30 min. The solution was diluted with DCM (20 mL) and was washed with saturated aq NaHCO3 (20 mL), water (20 mL), and brine (20 mL). The organic layer was collected and concentrated to an orange solid, which was treated with Et2O (5 mL). Solids began to precipitate after the solution was allowed to sit undisturbed for 5 min. The mixture was allowed to sit for 1 h and was then filtered through paper. The solids were washed with Et2O (5 mL) and collected to give the title compound as a tan solid (137.3 mg, 93%). [M+H] calc'd for C22H29BrN6O3, 505. found, 505.

Workup

  1. temperatureThe resulting white suspension was heated with a heat gun
  2. dissolutionwas dissolved
  3. stirringwhile stirring
  4. temperatureto warm to RT
  5. stirringwas stirred for 30 min
  6. washwas washed with saturated aq NaHCO3 (20 mL), water (20 mL), and brine (20 mL)
  7. customThe organic layer was collected
  8. concentrationconcentrated to an orange solid, which
  9. additionwas treated with Et2O (5 mL)
  10. customto precipitate after the solution
  11. waitto sit for 1 h
  12. filtrationwas then filtered through paper
  13. washThe solids were washed with Et2O (5 mL)
  14. customcollected

Sources & evidence

ORD record
ord-67c38733cf61426eaf33816289d05ddb
Source dataset
uspto-grants-2015_11
Patent number
US09181255B2

Reaction notes

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