Ethanol → 2-cyclopropyl-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid (2-carbamoyl-1-cyclopropyl-2-methyl-propyl)-amide

HRID 446937Notes

Reaction equation

HRID 446937 reaction equation
[C:1]([C:3]([CH3:32])([CH3:31])[CH:4]([NH:8][C:9]([C:11]1[C:19]2[C:14](=[N:15][CH:16]=[C:17]([CH:20]3[CH2:22][CH2:21]3)[N:18]=2)[N:13]([CH2:23][O:24][CH2:25][CH2:26][Si:27]([CH3:30])([CH3:29])[CH3:28])[CH:12]=1)=[O:10])[CH:5]1[CH2:7][CH2:6]1)#[N:2].CC[OH:35]>O.[PtH]1([P](O[H]O[P]1(C)C)(C)C)[P](O)(C)C>[C:1]([C:3]([CH3:32])([CH3:31])[CH:4]([NH:8][C:9]([C:11]1[C:19]2[C:14](=[N:15][CH:16]=[C:17]([CH:20]3[CH2:22][CH2:21]3)[N:18]=2)[N:13]([CH2:23][O:24][CH2:25][CH2:26][Si:27]([CH3:29])([CH3:28])[CH3:30])[CH:12]=1)=[O:10])[CH:5]1[CH2:6][CH2:7]1)(=[O:35])[NH2:2]

Participants

4

Reactant 2

HCID 702EthanolHCID 670092382-cyclopropyl-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid (2-cyano-1-cyclopropyl-2,2-dimethyl-ethyl)-amide

Product 1

HCID 673888952-cyclopropyl-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid (2-carbamoyl-1-cyclopropyl-2-methyl-propyl)-amideYield 64%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

To a solution of 2-cyclopropyl-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid (2-cyano-1-cyclopropyl-2,2-dimethyl-ethyl)-amide (163 mg, 0.36 mmol) in EtOH (9 mL) and H2O (1 mL) was added [PtH(PMe2OH)(PMe2O)2H] (15 mg, 0.036 mmol). The reaction mixture was heated at reflux for 6 h. Additional catalyst (10 mg, 0.023 mmol) was added and heating was continued overnight. The reaction mixture was cooled to room temperature and concentrated. The residue was purified by SiO2 chromatography (50% to 100% EtOAc/hexanes) to provide 108 mg (64%) of 2-cyclopropyl-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid (2-carbamoyl-1-cyclopropyl-2-methyl-propyl)-amide as a viscous colorless oil.

Workup

  1. temperatureThe reaction mixture was heated
  2. temperatureat reflux for 6 h
  3. temperatureheating
  4. concentrationconcentrated
  5. customThe residue was purified by SiO2 chromatography (50% to 100% EtOAc/hexanes)

Sources & evidence

ORD record
ord-3904d24b61364957814d8aa9ff5fe3a3
Source dataset
uspto-grants-2013_07
Patent number
US08481541B2

Reaction notes

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