Pyridine → Methyl 3-(cyclopropyl(methyl)amino)-2-(trifluoromethylsulfonyloxy)quinoxaline-6-carboxylate

HRID 1403394Notes

Reaction equation

HRID 1403394 reaction equation
[CH:1]1([N:4]([CH3:20])[C:5]2[C:6](=[O:19])[NH:7][C:8]3[C:13]([N:14]=2)=[CH:12][C:11]([C:15]([O:17][CH3:18])=[O:16])=[CH:10][CH:9]=3)[CH2:3][CH2:2]1.N1C=CC=CC=1.[O:27](S(C(F)(F)F)(=O)=O)[S:28]([C:31]([F:34])([F:33])[F:32])(=O)=[O:29]>ClCCl>[CH:1]1([N:4]([CH3:20])[C:5]2[C:6]([O:19][S:28]([C:31]([F:34])([F:33])[F:32])(=[O:29])=[O:27])=[N:7][C:8]3[C:13]([N:14]=2)=[CH:12][C:11]([C:15]([O:17][CH3:18])=[O:16])=[CH:10][CH:9]=3)[CH2:2][CH2:3]1

Participants

5

Reactant 3

HCID 1049PyridineHCID 67749Trifluoromethanesulfonic anhydrideHCID 70654244Methyl 3-(cyclopropyl(methyl)amino)-2-oxo-1,2-dihydroquinoxaline-6-carboxylate

Product 1

HCID 86670226Methyl 3-(cyclopropyl(methyl)amino)-2-(trifluoromethylsulfonyloxy)quinoxaline-6-carboxylate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of methyl 3-(cyclopropyl(methyl)amino)-2-oxo-1,2-dihydroquinoxaline-6-carboxylate (120 mg, 0.44 mmol) in dichloromethane (10 mL) was added pyridine (135 mg, 1.71 mmol) and Tf2O (230 mg, 0.82 mmol) under nitrogen atmosphere. After stirring overnight at room temperature, the reaction was quenched by the addition water/ice (50 mL), extracted with dichloromethane (2×10 mL), dried over anhydrous magnesium sulfate and concentrated under vacuum to give methyl 3-(cyclopropyl(methyl)amino)-2-(trifluoromethylsulfonyloxy)quinoxaline-6-carboxylate as red oil (130 mg, crude).

Workup

  1. customthe reaction was quenched by the addition water/ice (50 mL)
  2. extractionextracted with dichloromethane (2×10 mL)
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated under vacuum

Sources & evidence

ORD record
ord-4b6d0d53daf64dc6bbb6c4de55806d5e
Source dataset
uspto-grants-2014_12
Patent number
US08912188B2

Reaction notes

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