Water → tert-butyl 4-{2-[4-(2-chloro-5-methoxypyrimidin-4-yl)-1H-pyrazol-1-yl]-3-cyanopropyl}piperidine-1-carboxylate

HRID 1876903Notes

Reaction equation

HRID 1876903 reaction equation
[Cl:1][C:2]1[N:7]=[C:6](Cl)[C:5]([O:9][CH3:10])=[CH:4][N:3]=1.[C:11]([CH2:13][CH:14]([N:29]1[CH:33]=[C:32](B2OC(C)(C)C(C)(C)O2)[CH:31]=[N:30]1)[CH2:15][CH:16]1[CH2:21][CH2:20][N:19]([C:22]([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])=[O:23])[CH2:18][CH2:17]1)#[N:12].O1CCOCC1.C(=O)([O-])[O-].[Na+].[Na+].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:32]2[CH:31]=[N:30][N:29]([CH:14]([CH2:13][C:11]#[N:12])[CH2:15][CH:16]3[CH2:17][CH2:18][N:19]([C:22]([O:24][C:25]([CH3:28])([CH3:26])[CH3:27])=[O:23])[CH2:20][CH2:21]3)[CH:33]=2)[C:5]([O:9][CH3:10])=[CH:4][N:3]=1

Participants

8

Reactant 5

HCID 962WaterHCID 10340Sodium CarbonateHCID 312751,4-DioxaneHCID 6014012,4-Dichloro-5-methoxypyrimidineHCID 68753948tert-butyl 4-(3-cyano-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)propyl)piperidine-1-carboxylate

Product 1

HCID 86637304tert-butyl 4-{2-[4-(2-chloro-5-methoxypyrimidin-4-yl)-1H-pyrazol-1-yl]-3-cyanopropyl}piperidine-1-carboxylateYield 76.7%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
100 °C

Procedure

To a mixture of 2,4-dichloro-5-methoxypyrimidine (0.967 g, 0.00540 mol), and tert-butyl 4-{3-cyano-2-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]propyl}piperidine-1-carboxylate (from example 1 step 3, 2.00 g, 0.00450 mol) in 1,4-dioxane (40 mL, 0.5 mol) was added a 1 M solution of sodium carbonate (0.954 g, 0.00900 mol) in water (8.99 mL, 0.499 mol) and tetrakis(triphenylphosphine)palladium(0) (0.4 g, 0.0003 mol). The reaction mixture 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 80% EtOAc in hexanes, to provide the desired product (1.59 g, 76.64%). LCMS (M+Na) 483.4.

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 80% EtOAc in hexanes

Sources & evidence

ORD record
ord-257a6c18da884357a34c4ffab36ab65e
Source dataset
uspto-grants-2012_11
Patent number
US08309718B2

Reaction notes

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