4-Methylmorpholine → N-(2-Amino-2-methylpropyl)-8-[(2,6-difluorobenzyl)oxy]-2,6-dimethylimidazo[1,2-a]pyridine-3-carboxamide

HRID 2275884Notes

Reaction equation

HRID 2275884 reaction equation
[F:1][C:2]1[CH:23]=[CH:22][CH:21]=[C:20]([F:24])[C:3]=1[CH2:4][O:5][C:6]1[C:7]2[N:8]([C:13]([C:17](O)=[O:18])=[C:14]([CH3:16])[N:15]=2)[CH:9]=[C:10]([CH3:12])[CH:11]=1.F[B-](F)(F)F.N1(O[C+](N(C)C)N(C)C)C2C=CC=CC=2N=N1.CN1CCOCC1.[CH3:54][C:55]([NH2:59])([CH3:58])[CH2:56][NH2:57]>CN(C=O)C>[NH2:59][C:55]([CH3:58])([CH3:54])[CH2:56][NH:57][C:17]([C:13]1[N:8]2[CH:9]=[C:10]([CH3:12])[CH:11]=[C:6]([O:5][CH2:4][C:3]3[C:2]([F:1])=[CH:23][CH:22]=[CH:21][C:20]=3[F:24])[C:7]2=[N:15][C:14]=1[CH3:16])=[O:18]

Participants

6

Reactant 4

HCID 79724-MethylmorpholineHCID 131282-MethylpropylenediamineHCID 867178848-[(2,6-Difluorobenzyl)oxy]-2,6-dimethylimidazo[1,2-a]pyridine-3-carboxylic acidHCID 178484679HCID 178484679, compound

Product 1

HCID 86717963N-(2-Amino-2-methylpropyl)-8-[(2,6-difluorobenzyl)oxy]-2,6-dimethylimidazo[1,2-a]pyridine-3-carboxamide

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

100 mg of 8-[(2,6-difluorobenzyl)oxy]-2,6-dimethylimidazo[1,2-a]pyridine-3-carboxylic acid (0.30 mmol), 145 mg of (benzotriazol-1-yloxy)bisdimethylaminomethylium fluoroborate (TBTU, 0.45 mmol) and 122 mg of 4-methylmorpholine (1.20 mmol) were initially charged in 1.9 ml of DMF. 53 mg of 2-methylpropane-1,2-diamine (0.60 mmol) were then added, and the mixture was stirred at RT overnight. The reaction solution was purified by preparative HPLC (RP18 column, mobile phase: acetonitrile/water gradient with addition of 0.1% TFA). The product fractions were taken up in dichloromethane and washed with saturated aqueous sodium bicarbonate solution. The aqueous phase was extracted twice with dichloromethane. The combined organic phases were dried over sodium sulphate, filtered, concentrated and lyophilized. This gave 94 mg of the title compound (78% of theory).

Workup

  1. customThe reaction solution was purified by preparative HPLC (RP18 column, mobile phase: acetonitrile/water gradient with addition of 0.1% TFA)
  2. washwashed with saturated aqueous sodium bicarbonate solution
  3. extractionThe aqueous phase was extracted twice with dichloromethane
  4. dry with materialThe combined organic phases were dried over sodium sulphate
  5. filtrationfiltered
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-cdc40eb987024726ae97ec6cb292f1ea
Source dataset
uspto-grants-2015_09
Patent number
US09126998B2

Reaction notes

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