Water → 6-(1-Isopropyl-6-oxo-1,6-dihydro-3-pyridazinyl)-3-[(4-methoxybenzyl)amino]-5-phenyl-2-pyrazinecarbonitrile

HRID 915022Notes

Reaction equation

[CH:1]([N:4]1[C:9](=[O:10])[CH:8]=[CH:7][C:6]([C:11]2[N:12]=[C:13]([C:25]#[N:26])[C:14](C#N)=[N:15][C:16]=2[C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)=[N:5]1)([CH3:3])[CH3:2].[CH3:27][O:28][C:29]1[CH:36]=[CH:35][C:32]([CH2:33][NH2:34])=[CH:31][CH:30]=1.O.CCCCCC>CC(N(C)C)=O.CCOC(C)=O>[CH:1]([N:4]1[C:9](=[O:10])[CH:8]=[CH:7][C:6]([C:11]2[N:12]=[C:13]([C:25]#[N:26])[C:14]([NH:34][CH2:33][C:32]3[CH:35]=[CH:36][C:29]([O:28][CH3:27])=[CH:30][CH:31]=3)=[N:15][C:16]=2[C:17]2[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=2)=[N:5]1)([CH3:2])[CH3:3]

Participants

Conditions

Temperature: 82.5 °C

Procedure

A mixture of 5-(1-isopropyl-6-oxo-1,6-dihydro-3-pyridazinyl)-6-phenyl-2,3-pyrazinedicarbonitrile (343 mg) and (4-methoxybenzyl)amine (0.137 ml) in DMA (1 ml) was heated at 80-85° C. for 25 hours. After addition of water, a precipitate was collected by filtration, dissolved in CHCl3, dried over MgSO4 and concentrated under reduced pressure to give a residue. The residue was subjected to column chromatography on silica gel eluting with a mixture of n-hexane and EtOAc (60:40 v/v) to give 6-(1-isopropyl-6-oxo-1,6-dihydro-3-pyridazinyl)-3-[(4-methoxybenzyl)amino]-5-phenyl-2-pyrazinecarbonitrile as an amorphous solid (227 mg).

Workup

filtrationa precipitate was collected by filtration
dissolutiondissolved in CHCl3
dry with materialdried over MgSO4
concentrationconcentrated under reduced pressure
customto give a residue

Sources & evidence

ORD record: ord-4ffd0b7469d2473e9604a7375a4fda4d
Source dataset: uspto-grants-2007_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07265120B2

Reaction notes

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