Diethylamine → 3-(4-(1H-Pyrazol-1-yl)benzyl)-6-bromo-4-chloro-N,N-diethylquinolin-2-amine

HRID 926567Notes

Reaction equation

[N:1]1([C:6]2[CH:25]=[CH:24][C:9]([CH2:10][C:11]3[C:12](Cl)=[N:13][C:14]4[C:19]([C:20]=3[Cl:21])=[CH:18][C:17]([Br:22])=[CH:16][CH:15]=4)=[CH:8][CH:7]=2)[CH:5]=[CH:4][CH:3]=[N:2]1.[CH2:26]([NH:28][CH2:29][CH3:30])[CH3:27]>CN(C=O)C.CCOC(C)=O>[N:1]1([C:6]2[CH:25]=[CH:24][C:9]([CH2:10][C:11]3[C:12]([N:28]([CH2:29][CH3:30])[CH2:26][CH3:27])=[N:13][C:14]4[C:19]([C:20]=3[Cl:21])=[CH:18][C:17]([Br:22])=[CH:16][CH:15]=4)=[CH:8][CH:7]=2)[CH:5]=[CH:4][CH:3]=[N:2]1

Participants

Conditions

Temperature: 115 °C

Procedure

A mixture of 3-(4-(1H-pyrazol-1-yl)benzyl)-6-bromo-2,4-dichloroquinoline (1.44 g, 3.33 mmol, Intermediate 3: step c) and diethylamine (6.91 mL, 66.5 mmol) in DMF (10 mL) in a sealed tube was heated in a 115° C. oil bath for 23 h. The mixture was diluted with EtOAc and extracted with water (5×, sat. aq. NaCl added as needed to achieve phase separation). The organic phase was dried (Na2SO4), filtered, and concentrated. The residue was purified by flash column chromatography (silica gel, dry loading, 2-10% EtOAc-heptanes first column, 0-4% EtOAc-heptanes second column) to afford the title compound as a white solid.

Workup

extractionextracted with water (5×, sat. aq. NaCl added as needed to achieve phase separation)
dry with materialThe organic phase was dried (Na2SO4)
filtrationfiltered
concentrationconcentrated
customThe residue was purified by flash column chromatography (silica gel, dry loading, 2-10% EtOAc-heptanes first column, 0-4% EtOAc-heptanes second column)

Sources & evidence

ORD record: ord-d7eb13c442fc4f39af7f328ff54adf7d
Source dataset: uspto-grants-2016_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09284308B2

Reaction notes

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