Bicyclo[2.2.1]heptane-1-methanesulfonic acid, 7,7-dimethyl-2-oxo-, (1S)- → 6'-(5-methyl-1H-pyrazol-4-yl)-1-(pyridin-2-yl)-1'H-spiro[piperidine-4,2'-thieno[3,2-d]pyrimidin]-4'(3'H)-one

HRID 2364109Notes

Reaction equation

HRID 2364109 reaction equation
[NH2:1][C:2]1[CH:6]=[C:5]([C:7]2[CH:8]=[N:9][NH:10][C:11]=2[CH3:12])[S:4][C:3]=1[C:13]([NH2:15])=[O:14].[N:16]1[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=1[N:22]1[CH2:27][CH2:26][C:25](=O)[CH2:24][CH2:23]1.CC1(C)C2(CS(O)(=O)=O)C(CC1CC2)=O.[O-]S([O-])(=O)=O.[Mg+2].C([O-])(O)=O.[Na+]>CC(N(C)C)=O>[CH3:12][C:11]1[NH:10][N:9]=[CH:8][C:7]=1[C:5]1[S:4][C:3]2[C:13](=[O:14])[NH:15][C:25]3([CH2:24][CH2:23][N:22]([C:17]4[CH:18]=[CH:19][CH:20]=[CH:21][N:16]=4)[CH2:27][CH2:26]3)[NH:1][C:2]=2[CH:6]=1

Participants

7

Reactant 5

HCID 18462Bicyclo[2.2.1]heptane-1-methanesulfonic acid, 7,7-dimethyl-2-oxo-, (1S)-HCID 24083Sulfuric acid magnesium salt (1:1)HCID 516892Sodium BicarbonateHCID 183483911-(Pyridin-2-yl)piperidin-4-oneHCID 667430133-amino-5-(5-methyl-1H-pyrazol-4-yl)thiophene-2-carboxamide

Product 1

HCID 667437976'-(5-methyl-1H-pyrazol-4-yl)-1-(pyridin-2-yl)-1'H-spiro[piperidine-4,2'-thieno[3,2-d]pyrimidin]-4'(3'H)-oneYield 77.3%

Reagents, catalysts & solvents 1

HCID 31374DimethylacetamideSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of 3-amino-5-(5-methyl-1H-pyrazol-4-yl)thiophene-2-carboxamide (111 mg, 0.50 mmol), 1-(2-pyridyl)-piperidin-4-one (264 mg, 1.50 mmol), CSA (11.6 mg, 0.05 mmol), MgSO4 (120 mg, 1.00 mmol) and DMA (4 mL) was stirred at 100° C. for 1 h. The mixture was poured into saturated aqueous NaHCO3 and extracted with 3:1 EtOAc/THF, and the extract was dried over MgSO4, filtered and concentrated under reduced pressure. The residue was purified by column chromatography (Purif, silica gel, EtOAc to 80:20 EtOAc/MeOH). The obtained yellow solid (190 mg) was triturated with MeOH/EtOAc and collected by filtration to afford the title compound (147 mg, 77%) as a pale yellow solid:

Workup

  1. extractionextracted with 3:1 EtOAc/THF
  2. dry with materialthe extract was dried over MgSO4
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by column chromatography (Purif, silica gel, EtOAc to 80:20 EtOAc/MeOH)
  6. customThe obtained yellow solid (190 mg) was triturated with MeOH/EtOAc
  7. filtrationcollected by filtration

Sources & evidence

ORD record
ord-168e5f7fd8594748a797890fa41159be
Source dataset
uspto-grants-2014_04
Patent number
US08691828B2

Reaction notes

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