Diisopropylethylamine → 2-[6-(4,4-Difluoropiperidin-1-yl)pyrimidin-4-yl]-4-(1H-1,2,3-triazol-1-yl)-1,2-dihydro-3H-pyrazol-3-one

HRID 562470Notes

Reaction equation

HRID 562470 reaction equation
Cl.Cl[C:3]1[N:8]=[CH:7][N:6]=[C:5]([N:9]2[C:13](=[O:14])[C:12]([N:15]3[CH:19]=[CH:18][N:17]=[N:16]3)=[CH:11][NH:10]2)[CH:4]=1.Cl.[F:21][C:22]1([F:28])[CH2:27][CH2:26][NH:25][CH2:24][CH2:23]1.C(N(C(C)C)C(C)C)C>O1CCCC1>[F:21][C:22]1([F:28])[CH2:27][CH2:26][N:25]([C:3]2[N:8]=[CH:7][N:6]=[C:5]([N:9]3[C:13](=[O:14])[C:12]([N:15]4[CH:19]=[CH:18][N:17]=[N:16]4)=[CH:11][NH:10]3)[CH:4]=2)[CH2:24][CH2:23]1

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 27583514,4-Difluoropiperidine hydrochlorideHCID 866352542-(6-Chloropyrimidin-4-yl)-4-(1H-1,2,3-triazol-1-yl)-1,2-dihydro-3H-pyrazol-3-one hydrochloride

Product 1

HCID 444648652-[6-(4,4-Difluoropiperidin-1-yl)pyrimidin-4-yl]-4-(1H-1,2,3-triazol-1-yl)-1,2-dihydro-3H-pyrazol-3-one

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

250 mg (0.8 mmol) of the compound from Example 12A, 158 mg (1.0 mmol) of 4,4-difluoropiperidine hydrochloride and 435 μl (323 mg, 2.5 mmol) of N-ethyl-N-(propan-2-yl)propane-2-amine are initially charged in 5 ml of tetrahydrofuran and reacted in a single mode microwave (Emrys Optimizer) at 120° C. for 30 min. After pre-purification by preparative HPLC (RP18 column; mobile phase: acetonitrile/water gradient), the product is additionally purified by column chromatography on silica gel (mobile phase dichloromethane/methanol, 10/1). Yield: 29 mg (10% of theory)

Workup

  1. customreacted in a single mode microwave (Emrys Optimizer) at 120° C. for 30 min
  2. customAfter pre-purification by preparative HPLC (RP18 column; mobile phase: acetonitrile/water gradient)
  3. customthe product is additionally purified by column chromatography on silica gel (mobile phase dichloromethane/methanol, 10/1)

Sources & evidence

ORD record
ord-d4873f00883c42ada3c3e0cdd8a9bebe
Source dataset
uspto-grants-2011_11
Patent number
US08067407B2

Reaction notes

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