HuagongsheHuagongshe Chemistry Print Report · For research reference only
1-Methylpiperazine → 1-[(1-Cyclohexyl-4-oxo-4,5-dihydroimidazo[1,5-a]quinoxalin-7-yl)carbonyl]-4-methylpiperazine
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 1-Methylpiperazine | HCID 53167 | — |
| Reactant | 1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride | HCID 2723939 | — |
| Reactant | 1-Hydroxybenzotriazole hydrate | HCID 2796029 | — |
| Reactant | 1-Cyclohexyl-4-oxo-4,5-dihydroimidazo[1,5-a]quinoxaline-7-carboxylic acid | HCID 59198682 | — |
| Catalyst | 4-(Dimethylamino)pyridine | HCID 14284 | — |
| Solvent | Pyridine | HCID 1049 | — |
| Product | 1-[(1-Cyclohexyl-4-oxo-4,5-dihydroimidazo[1,5-a]quinoxalin-7-yl)carbonyl]-4-methylpiperazine | HCID 59198742 | — |
Reaction Steps
1-Cyclohexyl-4-oxo-4,5-dihydroimidazo[1,5-a]quinoxaline-7-carboxyic acid as synthesized in above Example 58, 218 mg, N-methylpiperazine 85 μL, 1-hydroxybenzotriazole monohydrate 161 mg, 4-dimethylaminopyridine 17 mg, pyridine 4.8 mL and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride 202 mg were mixed and stirred overnight under nitrogen atmosphere. After distilling the solvent off, ethyl acetate, tetrahydrofuran and saturated aqueous sodium hydrogencarbonate solution were added, and the organic layer was separated. The organic layer was washed with water and dried over magnesium sulfate. After distilling the solvent off, 67 mg of the title compound was obtained upon recrystallization from diethyl ether.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US09040536B2 |
| Source dataset | uspto-grants-2015_05 |
| ORD ID | ord-7dcee61dd9b2488582c08c6cb1d02768 |
| Source note | uspto-grants-2015_05 |