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Trifluoroacetic acid → 4-{3-(cyanomethyl)-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-1-yl}-N-[(1R)-1-cyclopropylethyl]-2,5-difluorobenzamide

HRID 571504
Notes
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Reaction equation

HRID 571504 reaction equation
[C:1]([CH2:3][C:4]1([N:24]2[CH:28]=[C:27]([C:29]3[C:30]4[CH:37]=[CH:36][N:35](COCC[Si](C)(C)C)[C:31]=4[N:32]=[CH:33][N:34]=3)[CH:26]=[N:25]2)[CH2:7][N:6]([C:8]2[C:21]([F:22])=[CH:20][C:11]([C:12]([NH:14][C@@H:15]([CH:17]3[CH2:19][CH2:18]3)[CH3:16])=[O:13])=[C:10]([F:23])[CH:9]=2)[CH2:5]1)#[N:2].FC(F)(F)C(O)=O>C(Cl)Cl>[C:1]([CH2:3][C:4]1([N:24]2[CH:28]=[C:27]([C:29]3[C:30]4[CH:37]=[CH:36][NH:35][C:31]=4[N:32]=[CH:33][N:34]=3)[CH:26]=[N:25]2)[CH2:7][N:6]([C:8]2[C:21]([F:22])=[CH:20][C:11]([C:12]([NH:14][C@@H:15]([CH:17]3[CH2:18][CH2:19]3)[CH3:16])=[O:13])=[C:10]([F:23])[CH:9]=2)[CH2:5]1)#[N:2]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 712079354-{3-(cyanomethyl)-3-[4-(7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-1-yl}-N-[(1R)-1-cyclopropylethyl]-2,5-difluorobenzamide

Product 1

HCID 711557114-{3-(cyanomethyl)-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-1-yl}-N-[(1R)-1-cyclopropylethyl]-2,5-difluorobenzamideYield 64.3%

Reagents, catalysts & solvents 1

HCID 6344
Dichloromethane
Solvent

Procedure

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}-N-[(1R)-1-cyclopropylethyl]-2,5-difluorobenzamide (0.48 g) was dissolved in a solution of trifluoroacetic acid (3 mL, 40 mmol) in methylene chloride (3 mL). The solution was stirred at room temperature for 1.5 hours. It was concentrated under reduced pressure. The residue was dissolved in methanol (5 mL). To the solution was added ethylenediamine (3 mL). The mixture was stirred at room temperature for 2 hours. After concentration the crude material was purified by flash chromatography on a silica gel column with methanol in dichloromethylene (0-10%) to afford the desired product (245 mg, 24%). LCMS (M+H)+: m/z=503.2. 1H NMR (400 MHz, DMSO-d6): δ 12.60 (s, 1H), 9.08 (s, 1H), 8.85 (s, 1H), 8.57 (s, 1H), 7.84 (dd, J=8.0, 4.0 Hz, 1H), 7.78 (m, 1H), 7.36 (dd, J=13.0, 7.0 Hz, 1H), 7.23 (m, 1H), 6.64 (dd, J=13.0, 7.0 Hz, 1H), 4.70 (d, J=8.0 Hz, 2H), 4.45 (d, J=8.0 Hz, 2H), 3.78 (s, 2H), 3.43 (m, 1H), 1.09 (d, J=6.5 Hz, 6H), 0.97 (m, 1H), 0.43 (m, 1H), 0.37 (m, 1H), 0.28 (m, 1H), 0.19 (m, 1H).

Workup

  1. concentrationIt was concentrated under reduced pressure
  2. dissolutionThe residue was dissolved in methanol (5 mL)
  3. additionTo the solution was added ethylenediamine (3 mL)
  4. stirringThe mixture was stirred at room temperature for 2 hours
  5. concentrationAfter concentration the crude material
  6. customwas purified by flash chromatography on a silica gel column with methanol in dichloromethylene (0-10%)

Sources & evidence

ORD record
ord-62599ccdd8e94a71b1936effcb4992af
Source dataset
uspto-grants-2015_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09023840B2

Reaction notes

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