1,8-Diazabicyclo(5.4.0)undec-7-ene → tert-butyl 3-(cyanomethyl)-3-[4-(5-fluoro-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridin-4-yl)-1H-pyrazol-1-yl]azetidine-1-carboxylate

HRID 1617374Notes

Reaction equation

HRID 1617374 reaction equation
[F:1][C:2]1[C:3]([C:19]2[CH:20]=[N:21][NH:22][CH:23]=2)=[C:4]2[CH:10]=[CH:9][N:8]([CH2:11][O:12][CH2:13][CH2:14][Si:15]([CH3:18])([CH3:17])[CH3:16])[C:5]2=[N:6][CH:7]=1.[C:24]([CH:26]=[C:27]1[CH2:30][N:29]([C:31]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])=[O:32])[CH2:28]1)#[N:25].N12CCCN=C1CCCCC2>C(#N)C>[C:24]([CH2:26][C:27]1([N:22]2[CH:23]=[C:19]([C:3]3[C:2]([F:1])=[CH:7][N:6]=[C:5]4[N:8]([CH2:11][O:12][CH2:13][CH2:14][Si:15]([CH3:18])([CH3:17])[CH3:16])[CH:9]=[CH:10][C:4]=34)[CH:20]=[N:21]2)[CH2:30][N:29]([C:31]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])=[O:32])[CH2:28]1)#[N:25]

Participants

5

Reactant 3

HCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 457892161-(tert-Butoxycarbonyl)-3-(cyanomethylene)azetidineHCID 584313954-(1H-pyrazol-4-yl)-5-fluoro-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridine

Product 1

HCID 67390274tert-butyl 3-(cyanomethyl)-3-[4-(5-fluoro-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridin-4-yl)-1H-pyrazol-1-yl]azetidine-1-carboxylateYield 96.3%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

To a solution of 5-fluoro-4-(1H-pyrazol-4-yl)-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridine (2.00 g, 6.02 mmol) and tert-butyl 3-(cyanomethylene)azetidine-1-carboxylate (1.168 g, 6.02 mmol) in acetonitrile (20 mL) was added 1,8-diazabicyclo[5.4.0]undec-7-ene (0.8996 mL, 6.02 mmol). The mixture was stirred at room temperature overnight and concentrated. The residue was purified by silica gel chromatography (0-80% EtOAc/hexanes) to give 3.05 g (96.3%) of tert-butyl 3-(cyanomethyl)-3-[4-(5-fluoro-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridin-4-yl)-1H-pyrazol-1-yl]azetidine-1-carboxylate as a colorless oil. LC/MS found: 527.3 (M+H)+.

Workup

  1. concentrationconcentrated
  2. customThe residue was purified by silica gel chromatography (0-80% EtOAc/hexanes)

Sources & evidence

ORD record
ord-aef5de8c16444d95a66ef9a0ed9e8637
Source dataset
uspto-grants-2014_07
Patent number
US08765734B2

Reaction notes

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