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Diisopropylethylamine → Methyl 3-(cyclopropyl(methyl)amino)-2-oxo-1,2-dihydroquinoxaline-6-carboxylate

HRID 1405265
Notes
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Reaction equation

HRID 1405265 reaction equation
Cl[C:2]1[C:3](=[O:16])[NH:4][C:5]2[C:10]([N:11]=1)=[CH:9][C:8]([C:12]([O:14][CH3:15])=[O:13])=[CH:7][CH:6]=2.CC[N:19]([CH:23]([CH3:25])[CH3:24])[CH:20](C)C.Cl.CNC1CC1>CS(C)=O>[CH:23]1([N:19]([CH3:20])[C:2]2[C:3](=[O:16])[NH:4][C:5]3[C:10]([N:11]=2)=[CH:9][C:8]([C:12]([O:14][CH3:15])=[O:13])=[CH:7][CH:6]=3)[CH2:24][CH2:25]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 18546974N-methylcyclopropanamine hydrochlorideHCID 68194304Methyl 3-chloro-2-oxo-1,2-dihydroquinoxaline-6-carboxylate

Product 1

HCID 70654244Methyl 3-(cyclopropyl(methyl)amino)-2-oxo-1,2-dihydroquinoxaline-6-carboxylateYield 35.3%

Reagents, catalysts & solvents 1

HCID 679
Dimethyl Sulfoxide
Solvent

Conditions

Temperature
75 °C

Procedure

To a solution of methyl 3-chloro-2-oxo-1,2-dihydroquinoxaline-6-carboxylate (1.0 g, 4.20 mmol) in DMSO (6 mL) was added DIEA (1.35 g, 10.47 mmol), N-methylcyclopropanamine hydrochloride (490 mg, 4.58 mmol). The solution was stirred 10 mins at room temperature and 2 h at 75° C. Then the reaction was quenched by the addition of water (100 mL) and the solids were collected by filtration to afford methyl 3-(cyclopropyl(methyl)amino)-2-oxo-1,2-dihydroquinoxaline-6-carboxylate as a yellow solid (405 mg, 35%).

Workup

  1. customThen the reaction was quenched by the addition of water (100 mL)
  2. filtrationthe solids were collected by filtration

Sources & evidence

ORD record
ord-91203944d892420986d12fbff49d93fe
Source dataset
uspto-grants-2014_12
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08916561B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes