1,8-Diazabicyclo(5.4.0)undec-7-ene → 3-Cyclopentylidene-3-[4-(7-[2-(trimethylsilyl)ethoxy]methyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]propanenitrile

HRID 1426528Notes

Reaction equation

HRID 1426528 reaction equation
[CH:1]1([C:6]#[C:7][C:8]#[N:9])[CH2:5][CH2:4][CH2:3][CH2:2]1.[NH:10]1[CH:14]=[C:13]([C:15]2[C:16]3[CH:23]=[CH:22][N:21]([CH2:24][O:25][CH2:26][CH2:27][Si:28]([CH3:31])([CH3:30])[CH3:29])[C:17]=3[N:18]=[CH:19][N:20]=2)[CH:12]=[N:11]1.C1CCN2C(=NCCC2)CC1>C(#N)C>[C:1]1(=[C:6]([N:10]2[CH:14]=[C:13]([C:15]3[C:16]4[CH:23]=[CH:22][N:21]([CH2:24][O:25][CH2:26][CH2:27][Si:28]([CH3:31])([CH3:30])[CH3:29])[C:17]=4[N:18]=[CH:19][N:20]=3)[CH:12]=[N:11]2)[CH2:7][C:8]#[N:9])[CH2:5][CH2:4][CH2:3][CH2:2]1

Participants

5

Reactant 3

HCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 426313464-(1H-Pyrazol-4-yl)-7-(2-(trimethylsilyl)ethoxy)methyl-7 H-pyrrolo(2,3-d)-pyrimidineHCID 574776163-Cyclopentylpropiolonitrile

Product 1

HCID 574776193-Cyclopentylidene-3-[4-(7-[2-(trimethylsilyl)ethoxy]methyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]propanenitrileYield 74%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

To a suspension of 3-cyclopentylprop-2-ynenitrile (0.4 g, 0.003 mol) in ACN (10 mL) was added 4-(1H-pyrazol-4-yl)-7-[2-(trimethylsilyl)ethoxy]methyl-7H-pyrrolo[2,3-d]pyrimidine (0.53 g, 1.7 mmol) and DBU (0.33 mL, 2.2 mmol). This mixture was stirred at room temperature for 50 minutes. The reaction mixture was partitioned between ethyl acetate and dilute HCl. The aqueous portion was separated and extracted with ethyl acetate. The combined organic extracts were washed with dilute HCl and brine, were dried over sodium sulfate, filtered and concentrated in vacuo. The crude residue was purified by flash column chromatography (ethyl acetate/hexanes) to yield the desired product (540 mg, 74%).

Workup

  1. customThe reaction mixture was partitioned between ethyl acetate and dilute HCl
  2. customThe aqueous portion was separated
  3. extractionextracted with ethyl acetate
  4. washThe combined organic extracts were washed with dilute HCl and brine
  5. dry with materialwere dried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe crude residue was purified by flash column chromatography (ethyl acetate/hexanes)

Sources & evidence

ORD record
ord-38f12cfa140d4944ba2f67277713f8b7
Source dataset
uspto-grants-2015_01
Patent number
US08933086B2

Reaction notes

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