Trifluoroacetic acid → 1-[3-(5-chloro-1H-pyrrolo[2,3-b]pyridin-4-yl)phenyl]-5-hydroxy-2-(1-hydroxyethyl)pyridin-4(1H)-one

HRID 571076Notes

Reaction equation

HRID 571076 reaction equation
[Cl:1][C:2]1[C:3]([C:11]2[CH:12]=[C:13]([N:17]3[CH:22]=[C:21]([O:23]CC4C=CC(OC)=CC=4)[C:20](=[O:33])[CH:19]=[C:18]3[CH:34]([OH:36])[CH3:35])[CH:14]=[CH:15][CH:16]=2)=[C:4]2[CH:10]=[CH:9][NH:8][C:5]2=[N:6][CH:7]=1.FC(F)(F)C(O)=O>ClCCl>[Cl:1][C:2]1[C:3]([C:11]2[CH:12]=[C:13]([N:17]3[CH:22]=[C:21]([OH:23])[C:20](=[O:33])[CH:19]=[C:18]3[CH:34]([OH:36])[CH3:35])[CH:14]=[CH:15][CH:16]=2)=[C:4]2[CH:10]=[CH:9][NH:8][C:5]2=[N:6][CH:7]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 866802781-[3-(5-chloro-1H-pyrrolo[2,3-b]pyridin-4-yl)phenyl]-2-(1-hydroxyethyl)-5-[(4-methoxybenzyl)oxy]pyridin-4(1H)-one

Product 1

HCID 533620911-[3-(5-chloro-1H-pyrrolo[2,3-b]pyridin-4-yl)phenyl]-5-hydroxy-2-(1-hydroxyethyl)pyridin-4(1H)-one

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a 100 mL round-bottom flask containing 2.34 g (4.66 mmol) 1-[3-(5-chloro-1H-pyrrolo[2,3-b]pyridin-4-yl)phenyl]-2-(1-hydroxyethyl)-5-[(4-methoxybenzyl)oxy]pyridin-4(1H)-one was added 25 mL 1:1 (v/v) dichloromethane:trifluoroacetic acid and the solution stirred at room temperature for 30 min. Concentration in vacuo, purification by reversed phase HPLC (2 cm×5 cm C18, acetonitrile-water gradient, 0.05% TFA added), and elution from an SCX column (50 g, sulfonic acid, rinsed with MeOH, eluted with 1 N NH3 in MeOH) afforded 1-[3-(5-chloro-1H-pyrrolo[2,3-b]pyridin-4-yl)phenyl]-5-hydroxy-2-(1-hydroxyethyl)pyridin-4(1H)-one. 1H NMR (600 MHz, DMSO, 50° C.): δ 11.96 (s, 1 H); 8.35 (s, 1 H); 7.75 (dd, J=7.9, 7.7 Hz, 1 H); 7.70 (d, J=7.8 Hz, 1 H); 7.60-7.55 (m, 3 H); 7.34 (s, 1 H); 6.46 (s, 1 H); 6.29 (s, 1 H); 4.41 (q, J=6.4 Hz, 1 H); 1.20 (d, J=6.4 Hz, 3 H). HRMS (FT/ICR) Calc (M+H)+ 382.0953 found 382.0955.

Workup

  1. concentrationConcentration
  2. customin vacuo, purification
  3. additionby reversed phase HPLC (2 cm×5 cm C18, acetonitrile-water gradient, 0.05% TFA added), and elution
  4. washfrom an SCX column (50 g, sulfonic acid, rinsed with MeOH, eluted with 1 N NH3 in MeOH)

Sources & evidence

ORD record
ord-cdd1c79fd2f543898362d9e8d7e77f68
Source dataset
uspto-grants-2015_05
Patent number
US09024032B2

Reaction notes

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