Trifluoroacetic acid → HCID 71279930, compound

HRID 246497Notes

Reaction equation

HRID 246497 reaction equation
[C:1]([NH:5][C:6]([C:8]1[C:16]2[C:11](=[N:12][CH:13]=[C:14]([N:17]3[C:21]4=[N:22][CH:23]=[C:24]([CH3:26])[CH:25]=[C:20]4[CH:19]=[N:18]3)[N:15]=2)[N:10](COCC[Si](C)(C)C)[CH:9]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].FC(F)(F)C(O)=O>ClCCl>[C:1]([NH:5][C:6]([C:8]1[C:16]2[C:11](=[N:12][CH:13]=[C:14]([N:17]3[C:21]4=[N:22][CH:23]=[C:24]([CH3:26])[CH:25]=[C:20]4[CH:19]=[N:18]3)[N:15]=2)[NH:10][CH:9]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 71280284HCID 71280284, compound

Product 1

HCID 71279930HCID 71279930, compoundYield 14%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a stirred solution of N-tert-butyl-2-(5-methyl-1H-pyrazolo[3,4-b]pyridin-1-yl)-5-((2-(trimethylsilyl)ethoxy)methyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide (0.1 g, 208 μmol) in dichloromethane (3 mL) was added trifluoroacetic acid (1 mL). After 15 h, the mixture was concentrated in vacuo then 25 mL of a Jan. 10, 1960 mixture of ammonium hydroxide/methanol/dichloromethane added. After 1 h the mixture was concentrated in vacuo. Purification by chromatography (silica, 24 g Analogix column, 0-4% methanol containing 10% ammonium hydroxide in dichloromethane) gave 2-(5-methyl-pyrazolo[3,4-b]pyridin-1-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid tert-butylamide (10 mg, 14%). MS (M+H)+=350; 1H NMR (DMSO-d6) δ: 9.08 (s, 1H), 8.54 (d, J=1.8 Hz, 1H), 8.50 (s, 1H), 8.39 (s, 1H), 8.28 (s, 1H), 8.21 (dd, J=2.0, 0.8 Hz, 1H), 1.49 (s, 9H).

Workup

  1. concentrationthe mixture was concentrated in vacuo
  2. addition10, 1960 mixture of ammonium hydroxide/methanol/dichloromethane
  3. additionadded
  4. concentrationAfter 1 h the mixture was concentrated in vacuo
  5. customPurification by chromatography (silica, 24 g Analogix column, 0-4% methanol containing 10% ammonium hydroxide in dichloromethane)

Sources & evidence

ORD record
ord-1b23cf14aac746efb1d322da7c6f0a3c
Source dataset
uspto-grants-2014_02
Patent number
US08658646B2

Reaction notes

Loading…