Cesium carbonate → methyl 4-{3-(cyanomethyl)-3-[4-(7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-1-yl}benzoate

HRID 571499Notes

Reaction equation

HRID 571499 reaction equation
Cl.Cl.[CH3:3][Si:4]([CH3:31])([CH3:30])[CH2:5][CH2:6][O:7][CH2:8][N:9]1[C:13]2[N:14]=[CH:15][N:16]=[C:17]([C:18]3[CH:19]=[N:20][N:21]([C:23]4([CH2:27][C:28]#[N:29])[CH2:26][NH:25][CH2:24]4)[CH:22]=3)[C:12]=2[CH:11]=[CH:10]1.Br[C:33]1[CH:42]=[CH:41][C:36]([C:37]([O:39][CH3:40])=[O:38])=[CH:35][CH:34]=1.C(=O)([O-])[O-].[Cs+].[Cs+].C1(PC2C=CC=CC=2)C=CC=CC=1>C1(C)C=CC=CC=1.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[C:28]([CH2:27][C:23]1([N:21]2[CH:22]=[C:18]([C:17]3[C:12]4[CH:11]=[CH:10][N:9]([CH2:8][O:7][CH2:6][CH2:5][Si:4]([CH3:30])([CH3:3])[CH3:31])[C:13]=4[N:14]=[CH:15][N:16]=3)[CH:19]=[N:20]2)[CH2:24][N:25]([C:33]2[CH:42]=[CH:41][C:36]([C:37]([O:39][CH3:40])=[O:38])=[CH:35][CH:34]=2)[CH2:26]1)#[N:29]

Participants

7

Reactant 4

HCID 10796Cesium carbonateHCID 12081Methyl 4-bromobenzoateHCID 70017DiphenylphosphineHCID 67391464{3-[4-(7-{[2-(Trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-3-yl}acetonitrile dihydrochloride

Product 1

HCID 71143606methyl 4-{3-(cyanomethyl)-3-[4-(7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-1-yl}benzoateYield 87%

Reagents, catalysts & solvents 2

HCID 167845palladium(II) acetateCatalystHCID 1140TolueneSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of {3-[4-(7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-3-yl}acetonitrile dihydrochloride (0.250 g, 0.518 mmol), methyl 4-bromobenzoate (0.13 g, 0.60 mmol, Aldrich: Cat. #407593), cesium carbonate (0.39 g, 1.2 mmol), palladium acetate (0.014 g, 0.060 mmol), 9,9-dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine (0.070 g, 0.12 mmol) in dry toluene (3 mL) was de-gassed and purged several times with nitrogen, and heated at 100° C. in a sealed tube for 14 hours with stirring. Upon cooling to room temperature the reaction mixture was filtered through a pad of celite. The filtrate was washed with water (1×), brine (1×), dried over sodium sulfate, filtered and concentrated in vacuo. The crude product was purified by flash chromatography on a silica gel column with ethyl acetate in hexane to afford the desired product (0.240 g, 87%). LCMS (M+H)+: m/z=544.2.

Workup

  1. customwas de-gassed
  2. custompurged several times with nitrogen
  3. temperatureUpon cooling to room temperature the reaction mixture
  4. filtrationwas filtered through a pad of celite
  5. washThe filtrate was washed with water (1×), brine (1×)
  6. dry with materialdried over sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo
  9. customThe crude product was purified by flash chromatography on a silica gel column with ethyl acetate in hexane

Sources & evidence

ORD record
ord-c8a98368707540a196706fc368cd4dec
Source dataset
uspto-grants-2015_05
Patent number
US09023840B2

Reaction notes

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