Trifluoroacetic acid → HCID 71279888, compound

HRID 246626Notes

Reaction equation

HRID 246626 reaction equation
[F:1][C:2]1[CH:10]=[C:9]2[C:5]([C:6]([C:12]3[N:13]=[C:14]4[C:20]([C:21]([NH:23][C:24]([CH3:37])([CH3:36])[CH2:25][CH2:26][CH2:27][NH:28]C(=O)OC(C)(C)C)=[O:22])=[CH:19][NH:18][C:15]4=[N:16][CH:17]=3)=[N:7][N:8]2[CH3:11])=[CH:4][CH:3]=1.[F:38][C:39]([F:44])([F:43])[C:40]([OH:42])=[O:41]>ClCCl>[F:38][C:39]([F:44])([F:43])[C:40]([OH:42])=[O:41].[NH2:28][CH2:27][CH2:26][CH2:25][C:24]([NH:23][C:21]([C:20]1[C:14]2[C:15](=[N:16][CH:17]=[C:12]([C:6]3[C:5]4[C:9](=[CH:10][C:2]([F:1])=[CH:3][CH:4]=4)[N:8]([CH3:11])[N:7]=3)[N:13]=2)[NH:18][CH:19]=1)=[O:22])([CH3:36])[CH3:37]

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 71280408HCID 71280408, compound

Product 1

HCID 71279888HCID 71279888, compoundYield 58%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a stirred solution of tert-butyl 4-(2-(6-fluoro-1-methyl-1H-indazol-3-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamido)-4-methylpentylcarbamate (75 mg, 0.15 mmol) in 6 mL of dichloromethane was added trifluoroacetic acid (3 mL) in one portion at room temperature and the solution stirred for 2 hours. The solvent was evaporated at 40° C. under reduced pressure and the residue was purified by preparative-HPLC (Gemini 5u C18 150×21.2 mm; inject volume: 3 mL/inj, flow rate: 20 mL/min; wavelength: 214 nm and 254 nm; the gradient conditions were: 20% acetonitrile/80% water (0.1% trifluoroacetic acid, v/v) initially, proceeding to 45% acetonitrile/55% water (0.1% trifluoroacetic acid, v/v) in a linear fashion over 9 min.) to give N-(5-amino-2-methylpentan-2-yl)-2-(6-fluoro-1-methyl-1H-indazol-3-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide 2,2,2-trifluoroacetate (35 mg, 58%) as a pale yellow solid. MS: (M+H)+=410; 1H NMR (300 MHz, DMSO): δ 12.98 (s, 1H), 9.11 (s, 1H), 8.49-8.42 (m, 2H), 7.88 (s, 1H), 7.74 (d, 1H, J=9.9 Hz), 7.60 (brs, 3H), 7.20 (t, 1H, J=9.0 Hz), 4.18 (s, 3H), 2.76 (brs, 2H), 2.00-1.94 (m, 2H), 1.61 (brs, 2H), 1.25 (s, 6H).

Workup

  1. customThe solvent was evaporated at 40° C. under reduced pressure
  2. customthe residue was purified by preparative-HPLC (Gemini 5u C18 150×21.2 mm
  3. wait20% acetonitrile/80% water (0.1% trifluoroacetic acid, v/v) initially, proceeding to 45% acetonitrile/55% water (0.1% trifluoroacetic acid, v/v) in a linear fashion over 9 min.

Sources & evidence

ORD record
ord-08e47da5bf6e4fc5b2318ce8a158d7f6
Source dataset
uspto-grants-2014_02
Patent number
US08658646B2

Reaction notes

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