Piperidin-4-ol → HCID 66575859, compound

HRID 1775556Notes

Reaction equation

HRID 1775556 reaction equation
[Cl:1][C:2]1[C:7]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)=[N:6][N:5]=[C:4]2[N:14]([CH2:23][C:24]([OH:26])=O)[N:15]=[C:16]([C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)[C:3]=12.[NH:27]1[CH2:32][CH2:31][CH:30]([OH:33])[CH2:29][CH2:28]1.C(N(C(C)C)CC)(C)C.F[P-](F)(F)(F)(F)F.N1(OC(N(C)C)=[N+](C)C)C2N=CC=CC=2N=N1>CN(C=O)C.CCOC(C)=O>[Cl:1][C:2]1[C:7]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)=[N:6][N:5]=[C:4]2[N:14]([CH2:23][C:24]([N:27]3[CH2:32][CH2:31][CH:30]([OH:33])[CH2:29][CH2:28]3)=[O:26])[N:15]=[C:16]([C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)[C:3]=12

Participants

7

Reactant 4

HCID 79341Piperidin-4-olHCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 665757822-(4-chloro-3,5-diphenyl-1H-pyrazolo[3,4-c]pyridazin-1-yl)acetic acid

Product 1

HCID 66575859HCID 66575859, compoundYield 8.3%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a suspension of 2-(4-chloro-3,5-diphenyl-1H-pyrazolo[3,4-c]pyridazin-1-yl)acetic acid (100 mg, 0.27 mmol) in DMF (2 mL) were added piperidin-4-ol (30 mg, 0.30 mmol), diisopropylethylamine (DIPEA) (105 μL, 0.60 mmol) and 2-(7-aza-1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate (HATU) (125 mg, 0.33 mmol). The solution obtained was stirred at room temperature for 18 h then diluted with EtOAc. The organic phase was washed with water and brine, dried (MgSO4) and concentrated in vacuo. The resultant residue was purified by preparative HPLC followed by a second chromatography purification (silica gel, gradient 1/1 ethyl acetate/isohexane) yielding Compound 55 as a solid (10 mg).

Workup

  1. customThe solution obtained
  2. washThe organic phase was washed with water and brine
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated in vacuo
  5. customThe resultant residue was purified by preparative HPLC
  6. customfollowed by a second chromatography purification (silica gel, gradient 1/1 ethyl acetate/isohexane)

Sources & evidence

ORD record
ord-2f4b6f4e7cce4619b6aa4b92b6455285
Source dataset
uspto-grants-2016_02
Patent number
US09260381B2

Reaction notes

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