Trifluoroacetic acid → N-tert-butyl-2-(5-(difluoromethoxy)-1-(3-(methylsulfonyl)propyl)-1H-indazol-3-yl)-5H-pyrrolo[3,2-b]pyrazine-7-carboxamide

HRID 246731Notes

Reaction equation

HRID 246731 reaction equation
[C:1]([NH:5][C:6]([C:8]1[C:12]2=[N:13][C:14]([C:17]3[C:25]4[C:20](=[CH:21][CH:22]=[C:23]([O:26][CH:27]([F:29])[F:28])[CH:24]=4)[N:19]([CH2:30][CH2:31][CH2:32][S:33]([CH3:36])(=[O:35])=[O:34])[N:18]=3)=[CH:15][N:16]=[C:11]2[N:10](C(C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[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:12]2=[N:13][C:14]([C:17]3[C:25]4[C:20](=[CH:21][CH:22]=[C:23]([O:26][CH:27]([F:29])[F:28])[CH:24]=4)[N:19]([CH2:30][CH2:31][CH2:32][S:33]([CH3:36])(=[O:34])=[O:35])[N:18]=3)=[CH:15][N:16]=[C:11]2[NH:10][CH:9]=1)=[O:7])([CH3:3])([CH3:4])[CH3:2]

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 71280563N-tert-butyl-2-(5-(difluoromethoxy)-1-(3-(methylsulfonyl)propyl)-1H-indazol-3-yl)-5-trityl-5H-pyrrolo[3,2-b]pyrazine-7-carboxamide

Product 1

HCID 71280539N-tert-butyl-2-(5-(difluoromethoxy)-1-(3-(methylsulfonyl)propyl)-1H-indazol-3-yl)-5H-pyrrolo[3,2-b]pyrazine-7-carboxamideYield 72%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a stirred solution of N-tert-butyl-2-(5-(difluoromethoxy)-1-(3-(methylsulfonyl)propyl)-1H-indazol-3-yl)-5-trityl-5H-pyrrolo[3,2-b]pyrazine-7-carboxamide (105 mg, 0.138 mmol) in dichloromethane (4 mL) was added drop-wise trifluoroacetic acid (2 mL) at room temperature and the reaction mixture was stirred for 2 hours. The solvent was removed under reduced pressure and the residue was purified by preparative-TLC (silica gel, EtOAc as eluent) to give N-tert-butyl-2-(5-(difluoromethoxy)-1-(3-(methylsulfonyl)propyl)-1H-indazol-3-yl)-5H-pyrrolo[3,2-b]pyrazine-7-carboxamide (50 mg, 72%) as a white solid. MS: (M+H)+=521.1; 1H NMR (300 MHz, DMSO): δ 12.85 (brs, 1H), 9.13 (s, 1H), 8.42 (s, 1H), 8.25 (s, 1H), 7.93 (t, 1H, J=7.8 Hz), 7.47 (d, 1H, J=9.0 Hz), 7.24 (s, 1H), 4.72 (d, 2H, J=6.6 Hz), 3.28-3.18 (m, 2H), 3.02 (s, 3H), 2.40-2.38 (m, 2H), 1.53 (s, 9H).

Workup

  1. customThe solvent was removed under reduced pressure
  2. customthe residue was purified by preparative-TLC (silica gel, EtOAc as eluent)

Sources & evidence

ORD record
ord-e4eabffd002e4cc7b8358c2b6e9e1949
Source dataset
uspto-grants-2014_02
Patent number
US08658646B2

Reaction notes

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