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Ethylenediamine → 2-(6-chloro-1-methyl-1H-indazol-3-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid [(R)-2-(3,3-difluoro-azetidin-1-yl)-1-methyl-2-oxo-ethyl]-amide

HRID 245824
Notes
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Reaction equation

HRID 245824 reaction equation
[F:1][C:2]1([F:41])[CH2:5][N:4]([C:6](=[O:40])[C@H:7]([NH:9][C:10]([C:12]2[C:20]3[C:15](=[N:16][CH:17]=[C:18]([C:21]4[C:29]5[C:24](=[CH:25][C:26]([Cl:30])=[CH:27][CH:28]=5)[N:23]([CH3:31])[N:22]=4)[N:19]=3)[N:14](COCC[Si](C)(C)C)[CH:13]=2)=[O:11])[CH3:8])[CH2:3]1.FC(F)(F)C(O)=O.C(N)CN>ClCCl>[F:41][C:2]1([F:1])[CH2:5][N:4]([C:6](=[O:40])[C@H:7]([NH:9][C:10]([C:12]2[C:20]3[C:15](=[N:16][CH:17]=[C:18]([C:21]4[C:29]5[C:24](=[CH:25][C:26]([Cl:30])=[CH:27][CH:28]=5)[N:23]([CH3:31])[N:22]=4)[N:19]=3)[NH:14][CH:13]=2)=[O:11])[CH3:8])[CH2:3]1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 3301EthylenediamineHCID 6422Trifluoroacetic acidHCID 712860882-(6-chloro-1-methyl-1H-indazol-3-yl)-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid [(R)-2-(3,3-difluoro-azetidin-1-yl)-1-methyl-2-oxo-ethyl]-amide

Product 1

HCID 712882052-(6-chloro-1-methyl-1H-indazol-3-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid [(R)-2-(3,3-difluoro-azetidin-1-yl)-1-methyl-2-oxo-ethyl]-amide
Yield 65%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

In a round-bottomed flask, 2-(6-chloro-1-methyl-1H-indazol-3-yl)-5-(2-trimethylsilanylethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid [(R)-2-(3,3-difluoro-azetidin-1-yl)-1-methyl-2-oxo-ethyl]-amide (88 mg, 0.146 mmol) was dissolved in dichloromethane (0.7 ml) and trifluoroacetic acid (0.45 ml, 5.84 mmol) was added. The reaction mixture was stirred at room temperature for 2.5 h then concentrated. The residue was dissolved in dichloromethane (0.7 ml) and ethylenediamine (0.6 ml, 8.74 mmol) was added. The solution was stirred at room temperature for 1 h then quenched with water and diluted with ethyl acetate. The resultant suspension was filtered, washed with hot water and ethyl acetate and dried under high vacuum to provide 45 mg (62%) of 2-(6-chloro-1-methyl-1H-indazol-3-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid [(R)-2-(3,3-difluoro-azetidin-1-yl)-1-methyl-2-oxo-ethyl]-amide as a light yellow powder. MS: (M+H)+=474; 1H NMR (DMSO-d6, 300 MHz): δ (ppm) 10.55-11.71 (b. s, 1H), 9.13 (s, 1H), 8.71 (d, J=8.7 Hz, 1H), 8.40-8.54 (m, 2H), 7.97 (d, J=1.5 Hz, 1H), 7.26 (dd, J=8.7, 1.5 Hz, 1H), 4.67-4.99 (m, 3H), 4.38 (t, J=12.7 Hz, 2H), 4.17 (s, 3H), 1.44 (d, J=6.8 Hz, 3H).

Workup

  1. concentrationthen concentrated
  2. dissolutionThe residue was dissolved in dichloromethane (0.7 ml)
  3. stirringThe solution was stirred at room temperature for 1 h
  4. customthen quenched with water
  5. additiondiluted with ethyl acetate
  6. filtrationThe resultant suspension was filtered
  7. washwashed with hot water and ethyl acetate
  8. customdried under high vacuum

Sources & evidence

ORD record
ord-68af78a214684209aa7a579e3b88d6c7
Source dataset
uspto-grants-2014_02
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08658646B2

Reaction notes

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