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N,N-Diethylaniline → 4'-{[5-oxo-7-propyl-4-(tetrahydro-2H-pyran-4-yl)-4,5-dihydropyrazolo[1,5-a]pyrimidin-6-yl]methyl}biphenyl-2-carbonitrile

HRID 1412584
Notes
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Reaction equation

HRID 1412584 reaction equation
[O:1]1[CH2:6][CH2:5][CH:4]([NH:7][C:8]2[NH:12][N:11]=[CH:10][CH:9]=2)[CH2:3][CH2:2]1.[C:13]([C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][C:16]=1[C:21]1[CH:26]=[CH:25][C:24]([CH2:27][CH:28]([C:34](=O)[CH2:35][CH2:36][CH3:37])[C:29](OCC)=[O:30])=[CH:23][CH:22]=1)#[N:14].N12CCCN=C1CCCCC2.C(N(CC)C1C=CC=CC=1)C>Cl>[O:30]=[C:29]1[C:28]([CH2:27][C:24]2[CH:25]=[CH:26][C:21]([C:16]3[C:15]([C:13]#[N:14])=[CH:20][CH:19]=[CH:18][CH:17]=3)=[CH:22][CH:23]=2)=[C:34]([CH2:35][CH2:36][CH3:37])[N:12]2[N:11]=[CH:10][CH:9]=[C:8]2[N:7]1[CH:4]1[CH2:3][CH2:2][O:1][CH2:6][CH2:5]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 7061N,N-DiethylanilineHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 10020734Ethyl 2-[(2'-cyanobiphenyl-4-yl)methyl]-3-oxohexanoateHCID 67009691N-(tetrahydro-2H-pyran-4-yl)-1H-pyrazol-5-amine

Product 1

HCID 670101954'-{[5-oxo-7-propyl-4-(tetrahydro-2H-pyran-4-yl)-4,5-dihydropyrazolo[1,5-a]pyrimidin-6-yl]methyl}biphenyl-2-carbonitrile
Yield 88.3%

Reagents, catalysts & solvents 1

HCID 313Hydrochloric AcidSolvent

Conditions

Temperature
180 °C

Procedure

A mixture of N-(tetrahydro-2H-pyran-4-yl)-1H-pyrazol-5-amine (1.00 g), ethyl 2-[(2′-cyanobiphenyl-4-yl)methyl]-3-oxohexanoate (4.20 g), 1,8-diazabicyclo[5.4.0]undec-7-ene (0.9 mL) and N,N-diethylaniline (10 mL) was stirred at 180° C. overnight, allowed to cool, and poured into 1 M hydrochloric acid (50 mL), and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography to give the title compound as a colorless solid (2.39 g, 88%).

Workup

  1. temperatureto cool
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe ethyl acetate layer was washed with saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customThe solvent was evaporated under reduced pressure
  6. customthe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-8f27f2df79ca43bb80289b2d0b1e2df9
Source dataset
uspto-grants-2014_12
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08921379B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes