Potassium Phosphate, Tribasic → tert-butyl 4-(4-(2-chloropyrimidin-4-yl)-1H-pyrazol-1-yl)-4-(cyanomethyl)piperidine-1-carboxylate

HRID 1876846Notes

Reaction equation

HRID 1876846 reaction equation
[Cl:1][C:2]1[N:7]=[C:6](Cl)[CH:5]=[CH:4][N:3]=1.[C:9]([CH2:11][C:12]1([N:25]2[CH:29]=[C:28](B3OC(C)(C)C(C)(C)O3)[CH:27]=[N:26]2)[CH2:17][CH2:16][N:15]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:14][CH2:13]1)#[N:10].P([O-])([O-])([O-])=O.[K+].[K+].[K+]>O1CCOCC1.O.CCOC(C)=O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:1][C:2]1[N:7]=[C:6]([C:28]2[CH:27]=[N:26][N:25]([C:12]3([CH2:11][C:9]#[N:10])[CH2:13][CH2:14][N:15]([C:18]([O:20][C:21]([CH3:22])([CH3:23])[CH3:24])=[O:19])[CH2:16][CH2:17]3)[CH:29]=2)[CH:5]=[CH:4][N:3]=1

Participants

8

Reactant 3

HCID 62657Potassium Phosphate, TribasicHCID 775312,4-DichloropyrimidineHCID 68755373tert-butyl 4-(cyanomethyl)-4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)piperidine-1-carboxylate

Product 1

HCID 86637283tert-butyl 4-(4-(2-chloropyrimidin-4-yl)-1H-pyrazol-1-yl)-4-(cyanomethyl)piperidine-1-carboxylateYield 82%

Reagents, catalysts & solvents 4

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of 2,4-dichloropyrimidine (1.00 g, 6.71 mmol), tert-butyl 4-(cyanomethyl)-4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)piperidine-1-carboxylate (2.8 g, 6.7 mol), tetrakis(triphenylphosphine)palladium (0.5 g, 0.4 mmol), and potassium phosphate (4.3 g, 20 mmol) in 1,4-dioxane (20 mL) and water (2 mL) was heated at 100° C. overnight. After cooling to room temperature, the mixture was diluted with EtOAc, washed with water, brine, dried over MgSO4, and concentrated. The residue was purified on silica gel, eluting with 0 to 100% EtOAc in hexanes, to give the desired product (2.19 g, 82%). LCMS (M+H) 403.0.

Workup

  1. temperatureAfter cooling to room temperature
  2. washwashed with water, brine
  3. dry with materialdried over MgSO4
  4. concentrationconcentrated
  5. customThe residue was purified on silica gel
  6. washeluting with 0 to 100% EtOAc in hexanes

Sources & evidence

ORD record
ord-a911a1c4b7c74b15a6f6aa7277349a19
Source dataset
uspto-grants-2012_11
Patent number
US08309718B2

Reaction notes

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