Phenol → 2-(2-chlorobenzyl)-3-(2-phenoxy-pyrimidin-4-yl)-6,7-dihydro-5H-pyrazolo[1,2-a]pyrazol-1-one

HRID 1455247Notes

Reaction equation

HRID 1455247 reaction equation
[C:1]1([OH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[H-].[Na+].[Cl:10][C:11]1[CH:36]=[CH:35][CH:34]=[CH:33][C:12]=1[CH2:13][C:14]1[C:21](=[O:22])[N:17]2[CH2:18][CH2:19][CH2:20][N:16]2[C:15]=1[C:23]1[CH:28]=[CH:27][N:26]=[C:25](S(C)(=O)=O)[N:24]=1>C1COCC1.C([O-])(O)=O.[Na+]>[Cl:10][C:11]1[CH:36]=[CH:35][CH:34]=[CH:33][C:12]=1[CH2:13][C:14]1[C:21](=[O:22])[N:17]2[CH2:18][CH2:19][CH2:20][N:16]2[C:15]=1[C:23]1[CH:28]=[CH:27][N:26]=[C:25]([O:7][C:1]2[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=2)[N:24]=1

Participants

6

Reactant 3

HCID 996PhenolHCID 24758Sodium hydrideHCID 574380742-(2-chlorobenzyl)-3-(2-methanesulfonyl-pyrimidin-4-yl)-6,7-dihydro-5H-pyrazolo[1,2-a]pyrazol-1-one

Product 1

HCID 113506362-(2-chlorobenzyl)-3-(2-phenoxy-pyrimidin-4-yl)-6,7-dihydro-5H-pyrazolo[1,2-a]pyrazol-1-one

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolvent2×HCID 516892Sodium BicarbonateSolvent

Procedure

To a solution of phenol (0.18 g, 1.00 mmol) in THF (4 mL) is added sodium hydride (0.10 g of a 60% dispersion in mineral oil, 1.60 mmol). After stirring 5 min at room temperature a solution of 2-(2-chloro-benzyl)-3-(2-methanesulfonyl-pyrimidin-4-yl)-6,7-dihydro-5H-pyrazolo[1,2-a]pyrazol-1-one, 8, (0.21 g, 0.50 mmol) in THF (5 mL) is added to the reaction mixture. After stirring 1.5 h at room temperature, the mixture is diluted with aqueous saturated NaHCO3. The aqueous phase is extracted three times with CHCl3 and the combined organic phases are washed with aqueous saturated NaHCO3, dried (MgSO4), filtered and concentrated in vacuo. The crude residue is purified over silica (5% MeOH/CHCl3) to afford 100 mg of the desired product as a yellow solid: 1H NMR (300 MHz, CDCl3) δ 8.63 (d, J=5.4 Hz, 1H), 7.47 (t, J=7.8 Hz, 2H), 7.40 (d, J=5.4 Hz, 1H), 7.29-7.10 (m, 7H), 4.16 (t, J=6.9 Hz, 2H), 4.07 (s, 2H), 3.91 (t, J=6.9 Hz, 2H), 2.61 (dddd, J=6.9, 6.9, 6.9, 6.9 Hz, 2H); ESI+ MS: m/z (rel intensity) 418.9 (100, M++H).

Workup

  1. additionis added to the reaction mixture
  2. extractionThe aqueous phase is extracted three times with CHCl3
  3. washthe combined organic phases are washed with aqueous saturated NaHCO3
  4. dry with materialdried (MgSO4)
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe crude residue is purified over silica (5% MeOH/CHCl3)

Sources & evidence

ORD record
ord-ef0f192d0cf74cd695f8a5919652b4a4
Source dataset
uspto-grants-2009_01
Patent number
US07482356B2

Reaction notes

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