Hydrochloric Acid → 4-Chloro-N-methyl-N-(1-(4-(1-methyl-1H-pyrazol-5-yl)phthalazin-1-yl)piperidin-4-yl)-2-(methylsulfonyl)benzamide hydrochloride

HRID 2389251Notes

Reaction equation

HRID 2389251 reaction equation
[CH3:1][NH:2][CH:3]1[CH2:8][CH2:7][N:6]([C:9]2[C:18]3[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=3)[C:12]([C:19]3[N:23]([CH3:24])[N:22]=[CH:21][CH:20]=3)=[N:11][N:10]=2)[CH2:5][CH2:4]1.[Cl:25][C:26]1[CH:34]=[CH:33][C:29]([C:30]([OH:32])=O)=[C:28]([S:35]([CH3:38])(=[O:37])=[O:36])[CH:27]=1.C(N(C(C)C)CC)(C)C.C1(P(C2C=CC=CC=2)(=O)OC2C(F)=C(F)C(F)=C(F)C=2F)C=CC=CC=1.Cl.C(OCC)C>CN(C=O)C.C(Cl)Cl.CS(C)=O>[ClH:25].[Cl:25][C:26]1[CH:34]=[CH:33][C:29]([C:30]([N:2]([CH3:1])[CH:3]2[CH2:4][CH2:5][N:6]([C:9]3[C:18]4[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=4)[C:12]([C:19]4[N:23]([CH3:24])[N:22]=[CH:21][CH:20]=4)=[N:11][N:10]=3)[CH2:7][CH2:8]2)=[O:32])=[C:28]([S:35]([CH3:38])(=[O:37])=[O:36])[CH:27]=1

Participants

10

Reactant 6

HCID 313Hydrochloric AcidHCID 3283Diethyl EtherHCID 81531DiisopropylethylamineHCID 27610554-Chloro-2-(methylsulfonyl)benzoic acidHCID 4652311Pentafluorophenyl diphenylphosphinateHCID 59627388N-methyl-1-(4-(1-methyl-1H-pyrazol-5-yl)phthalazin-1-yl)piperidin-4-amine

Product 1

HCID 672869614-Chloro-N-methyl-N-(1-(4-(1-methyl-1H-pyrazol-5-yl)phthalazin-1-yl)piperidin-4-yl)-2-(methylsulfonyl)benzamide hydrochlorideYield 140.9%

Reagents, catalysts & solvents 3

HCID 679Dimethyl SulfoxideSolvent2×HCID 6228DimethylformamideSolvent2×HCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

Dissolve N-methyl-1-(4-(1-methyl-1H-pyrazol-5-yl)phthalazin-1-yl)piperidin-4-amine (100 mg, 0.31 mmol), 4-chloro-2-(methylsulfonyl)benzoic acid (87 mg, 0.37 mmol) and diisopropylethylamine (0.26 mL, 1.5 mmol) in DMF:DMSO=4:1 (2 mL) at 60° C. Cool to 0° C. and add pentafluorophenyl diphenylphosphinate (250 mg, 0.65 mmol) in DMF:DMSO=1:1 (1 mL) to the solution. Stir the mixture at 60° C. overnight. Cool the reaction mixture to ambient temperature and dilute with CH2Cl2, wash with brine, dry over Na2SO4, and concentrate under reduced pressure. Purify the resulting residue by flash silica gel chromatography (hexane:ethyl acetate:2 M NH3 in MeOH=20:5:1) to provide the product. Add excess 1 N HCl in diethyl ether (1 mL, 10 mmol) to the isolated product and remove the solvent to provide the title compound (150 mg, 84%). ES/MS m/z 539.0 (M+1).

Workup

  1. customat 60° C
  2. temperatureCool the reaction mixture to ambient temperature
  3. washwash with brine
  4. dry with materialdry over Na2SO4
  5. concentrationconcentrate under reduced pressure
  6. customPurify the resulting residue by flash silica gel chromatography (hexane:ethyl acetate:2 M NH3 in MeOH=20:5:1)
  7. customto provide the product

Sources & evidence

ORD record
ord-423b3c4444fc41779546455cc5cca48a
Source dataset
uspto-grants-2012_09
Patent number
US08273742B2

Reaction notes

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