Methanamine, N-methoxy-, hydrochloride (1:1) → 6-(4-benzyloxy-2-fluoro-phenyl)-3-methyl-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid methoxy-methyl-amide

HRID 2279167Notes

Reaction equation

HRID 2279167 reaction equation
[CH2:1]([O:8][C:9]1[CH:14]=[CH:13][C:12]([C:15]2[CH:16]=[C:17]([C:31](O)=[O:32])[C:18]3[C:23]([CH3:24])=[N:22][N:21]([CH:25]4[CH2:30][CH2:29][CH2:28][CH2:27][O:26]4)[C:19]=3[N:20]=2)=[C:11]([F:34])[CH:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CCN(C(C)C)C(C)C.Cl.[CH3:45][NH:46][O:47][CH3:48]>ClCCl>[CH3:48][O:47][N:46]([CH3:45])[C:31]([C:17]1[C:18]2[C:23]([CH3:24])=[N:22][N:21]([CH:25]3[CH2:30][CH2:29][CH2:28][CH2:27][O:26]3)[C:19]=2[N:20]=[C:15]([C:12]2[CH:13]=[CH:14][C:9]([O:8][CH2:1][C:2]3[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=3)=[CH:10][C:11]=2[F:34])[CH:16]=1)=[O:32]

Participants

5

Reactant 3

HCID 81138Methanamine, N-methoxy-, hydrochloride (1:1)HCID 81531DiisopropylethylamineHCID 866803216-(4-benzyloxy-2-fluoro-phenyl)-3-methyl-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid

Product 1

HCID 900139076-(4-benzyloxy-2-fluoro-phenyl)-3-methyl-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid methoxy-methyl-amideYield 70%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

6-(4-Benzyloxy-2-fluoro-phenyl)-3-methyl-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid (3.00 g) was dissolved in dichloromethane (50 mL), DIPEA (3.34 mL), N,O-dimethylhydroxylamine hydrochloride (0.63 g) and finally BEP (3.92 g) were added. The mixture was stirred at r.t. overnight, then extracted with sat. sodium carbonate solution, washed with 1N HCl and finally again with sodium carbonate solution. The solvent was evaporated and the residue was crystallized from methanol and filtered off giving 6-(4-benzyloxy-2-fluoro-phenyl)-3-methyl-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid methoxy-methyl-amide (2.28 g, 70%) as a solid.

Workup

  1. additionwere added
  2. extractionextracted with sat. sodium carbonate solution
  3. washwashed with 1N HCl and finally again with sodium carbonate solution
  4. customThe solvent was evaporated
  5. customthe residue was crystallized from methanol
  6. filtrationfiltered off

Sources & evidence

ORD record
ord-5189207cc3764aa9a5c248206ca0500b
Source dataset
uspto-grants-2015_09
Patent number
US09133181B2

Reaction notes

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