3-Bromobenzylamine hydrochloride → N-[(3-bromophenyl)methyl]-N'-{[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-5-methyl-1,3-benzenedicarboxamide

HRID 564418

Reaction equation

HRID 564418 reaction equation
[CH2:1]([N:3]1[C:7]2=[N:8][C:9]([CH2:33][CH3:34])=[C:10]([CH2:19][NH:20][C:21]([C:23]3[CH:24]=[C:25]([CH:29]=[C:30]([CH3:32])[CH:31]=3)[C:26](O)=[O:27])=[O:22])[C:11]([NH:12][CH:13]3[CH2:18][CH2:17][O:16][CH2:15][CH2:14]3)=[C:6]2[CH:5]=[N:4]1)[CH3:2].CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.Cl.[Br:60][C:61]1[CH:62]=[C:63]([CH2:67][NH2:68])[CH:64]=[CH:65][CH:66]=1>ClCCl>[Br:60][C:61]1[CH:62]=[C:63]([CH2:67][NH:68][C:26]([C:25]2[CH:29]=[C:30]([CH3:32])[CH:31]=[C:23]([C:21]([NH:20][CH2:19][C:10]3[C:11]([NH:12][CH:13]4[CH2:18][CH2:17][O:16][CH2:15][CH2:14]4)=[C:6]4[CH:5]=[N:4][N:3]([CH2:1][CH3:2])[C:7]4=[N:8][C:9]=3[CH2:33][CH3:34])=[O:22])[CH:24]=2)=[O:27])[CH:64]=[CH:65][CH:66]=1

Participants

5

Reactant 3

HCID 27249803-Bromobenzylamine hydrochlorideHCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 578133503-[({[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}amino)carbonyl]-5-methylbenzoic acid

Product 1

HCID 57813471N-[(3-bromophenyl)methyl]-N'-{[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-5-methyl-1,3-benzenedicarboxamideYield 73.8%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

The 3-[({[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}amino)carbonyl]-5-methylbenzoic acid (931 mg, 2 mmol) was partially dissolved in dichloromethane (50 mL), and HBTU (758 mg, 2.000 mmol) was added followed sequentially by [(3-bromophenyl)methyl]amine hydrochloride (464 mg, 2.000 mmol), and TEA (0.558 mL, 4.00 mmol). The mixture was allowed to stir under argon overnight at room temperature. The solvent was removed on a rotavap and the residue was taken up in EtOAc (100 mL) and washed 3× with water (50 mL) (emulsion, a few drops of 1N NaOH helps break emulsion), 1× with brine, dried over anhydrous Na2SO4, filtered and evaporated to give the crude residue. The residue was taken up in methylene chloride and absorbed on Isolute® Sorbent and purified by Combiflash using an 80 g silica column eluted with 0-10% DCM/MeOH. The product fractions were combined and concentrated to give N-[(3-bromophenyl)methyl]-N′-{[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-5-methyl-1,3-benzenedicarboxamide (962 mg, 1.476 mmol, 73.8% yield) as a white solid. LC-MS m/z 633.6 (M+H)+, 0.97 min (ret time); mp 116-118° C.

Workup

  1. customThe solvent was removed on a rotavap
  2. washwashed 3× with water (50 mL) (emulsion, a few drops of 1N NaOH helps break emulsion), 1× with brine
  3. dry with materialdried over anhydrous Na2SO4
  4. filtrationfiltered
  5. customevaporated
  6. customto give the crude residue
  7. customabsorbed on Isolute® Sorbent
  8. custompurified by Combiflash
  9. washeluted with 0-10% DCM/MeOH
  10. concentrationconcentrated

Sources & evidence

ORD record
ord-5956734e12ba4573acb583e2aabda6cf
Source dataset
uspto-grants-2011_11
Patent number
US08067408B2

Linked notes

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