Diisopropylethylamine → tert-butyl 3-({3-(benzyloxy)-5-[(1S)-2-methoxy-1-methylethoxy]benzoyl}amino)-1H-pyrazole-1-carboxylate

HRID 1989957Notes

Reaction equation

HRID 1989957 reaction equation
CCN(C(C)C)C(C)C.[CH3:10][O:11][CH2:12][C@@H:13]([O:15][C:16]1[CH:17]=[C:18]([CH:22]=[C:23]([O:25][CH2:26][C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[CH:24]=1)[C:19]([OH:21])=O)[CH3:14].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.[NH2:57][C:58]1[CH:62]=[CH:61][N:60]([C:63]([O:65][C:66]([CH3:69])([CH3:68])[CH3:67])=[O:64])[N:59]=1>CN(C=O)C.O>[CH3:14][C@H:13]([O:15][C:16]1[CH:17]=[C:18]([C:19]([NH:57][C:58]2[CH:62]=[CH:61][N:60]([C:63]([O:65][C:66]([CH3:69])([CH3:68])[CH3:67])=[O:64])[N:59]=2)=[O:21])[CH:22]=[C:23]([O:25][CH2:26][C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[CH:24]=1)[CH2:12][O:11][CH3:10]

Participants

7

Reactant 4

HCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 51358380tert-Butyl 3-amino-1H-pyrazole-1-carboxylateHCID 59127150Benzoic acid, 3-[(1S)-2-methoxy-1-methylethoxy]-5-(phenylmethoxy)-

Product 1

HCID 59127136tert-butyl 3-({3-(benzyloxy)-5-[(1S)-2-methoxy-1-methylethoxy]benzoyl}amino)-1H-pyrazole-1-carboxylateYield 74.1%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

DIPEA (28.5 mL, 164 mmol) was added to a suspension of 3-[(1S)-2-methoxy-(1-methylethyl)oxy]-5-{[phenylmethyl]oxy}benzoic acid (20.7 g, 65.6 mmol), HATU (31.2 g, 82.0 mmol) and 1,1-dimethylethyl 3-amino-1H-pyrazole-1-carboxylate (15.0 g, 82.0 mmol) in DMF (30 mL) and the reaction mixture stirred for 16 hours at RT. Water (250 mL) was added and the reaction mixture extracted with diethyl ether (3×150 mL). The organic layer was washed with saturated brine solution and dried (MgSO4). The filtrate was concentrated in vacuo and the residue crystallised on standing. The crystals were washed with isohexane to give to give the desired material as yellow crystals (23.4 g; 73%). m/z 482 (M+H)+.

Workup

  1. extractionthe reaction mixture extracted with diethyl ether (3×150 mL)
  2. washThe organic layer was washed with saturated brine solution
  3. dry with materialdried (MgSO4)
  4. concentrationThe filtrate was concentrated in vacuo
  5. customthe residue crystallised
  6. washThe crystals were washed with isohexane
  7. customto give

Sources & evidence

ORD record
ord-a8040ca9e61f45e29d8b8874e3174c01
Source dataset
uspto-grants-2010_01
Patent number
US07642263B2

Reaction notes

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