Ethylenediamine → 2-[6-chloro-1-(2-dimethylamino-ethyl)-1H-indazol-3-yl]-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((S)-2-methoxy-1-methyl-ethyl)-amide

HRID 246251Notes

Reaction equation

HRID 246251 reaction equation
[CH3:1][O:2][CH2:3][C@@H:4]([NH:6][C:7]([C:9]1[C:17]2[C:12](=[N:13][CH:14]=[C:15]([C:18]3[C:26]4[C:21](=[CH:22][C:23]([Cl:27])=[CH:24][CH:25]=4)[N:20]([CH2:28][CH2:29][N:30]([CH3:32])[CH3:31])[N:19]=3)[N:16]=2)[N:11](COCC[Si](C)(C)C)[CH:10]=1)=[O:8])[CH3:5].FC(F)(F)C(O)=O.C(N)CN>ClCCl>[CH3:1][O:2][CH2:3][C@@H:4]([NH:6][C:7]([C:9]1[C:17]2[C:12](=[N:13][CH:14]=[C:15]([C:18]3[C:26]4[C:21](=[CH:22][C:23]([Cl:27])=[CH:24][CH:25]=4)[N:20]([CH2:28][CH2:29][N:30]([CH3:32])[CH3:31])[N:19]=3)[N:16]=2)[NH:11][CH:10]=1)=[O:8])[CH3:5]

Participants

5

Reactant 3

HCID 3301EthylenediamineHCID 6422Trifluoroacetic acidHCID 712883792-[6-Chloro-1-(2-dimethylamino-ethyl)-1H-indazol-3-yl]-5-(2-trimethylsilanylethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((S)-2-methoxy-1-methyl-ethyl)amide

Product 1

HCID 712883442-[6-chloro-1-(2-dimethylamino-ethyl)-1H-indazol-3-yl]-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((S)-2-methoxy-1-methyl-ethyl)-amideYield 77.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

2-[6-Chloro-1-(2-dimethylamino-ethyl)-1H-indazol-3-yl]-5-(2-trimethylsilanylethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((S)-2-methoxy-1-methyl-ethyl)amide (50 mg, 0.085 mmol) was combined with dichloromethane (1 mL) and trifluoroacetic acid (0.19 ml, 2.56 mmol) was added. After stirring for 2 h, the reaction mixture was concentrated in vacuo and the residue was dissolved in dichloromethane (1 mL). Ethylenediamine (0.17 ml, 2.56 mmol) was added. After stirring for 20 min, the reaction was concentrated in vacuo. The residue was triturated with water (2 mL). The precipitate was filtered, washed with water and dried to obtain 30 mg (73%) of 2-[6-chloro-1-(2-dimethylamino-ethyl)-1H-indazol-3-yl]-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((S)-2-methoxy-1-methyl-ethyl)-amide as a yellow solid. MS: (M+H)+=456; 1H NMR (DMSO-d6) δ: 9.11 (s, 1H), 8.51 (d, J=8.5 Hz, 1H), 8.44 (s, 1H), 8.45 (s., 1H), 8.20 (d, J=8.0 Hz, 1H), 8.06 (s, 1H), 7.26 (d, J=8.3 Hz, 1H), 4.62 (br. s., 2H), 4.38 (br. s., 1H), 3.50 (dd, J=16.1, 4.0 Hz, 2H), 3.28 (s, 3H), 2.81 (br. s., 2H), 2.21 (s, 6H), 1.31 (d, J=6.5 Hz, 3H).

Workup

  1. additionwas added
  2. concentrationthe reaction mixture was concentrated in vacuo
  3. dissolutionthe residue was dissolved in dichloromethane (1 mL)
  4. stirringAfter stirring for 20 min
  5. concentrationthe reaction was concentrated in vacuo
  6. customThe residue was triturated with water (2 mL)
  7. filtrationThe precipitate was filtered
  8. washwashed with water
  9. customdried

Sources & evidence

ORD record
ord-df77b89dc7e8457b83c45a506b8e0864
Source dataset
uspto-grants-2014_02
Patent number
US08658646B2

Reaction notes

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