(4-Chloro-2-methoxy-3-(4-(trifluoromethyl)benzyl)quinolin-6-yl)(1-methyl-1H-imidazol-5-yl)methanol → (4-Chloro-2-methoxy-3-(4-(trifluoromethyl)benzyl)quinolin-6-yl)(1-methyl-1H-imidazol-5-yl)methanone

HRID 926562Notes

Reaction equation

[Cl:1][C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[C:9]([CH:12]([C:14]3[N:18]([CH3:19])[CH:17]=[N:16][CH:15]=3)[OH:13])[CH:10]=2)[N:5]=[C:4]([O:20][CH3:21])[C:3]=1[CH2:22][C:23]1[CH:28]=[CH:27][C:26]([C:29]([F:32])([F:31])[F:30])=[CH:25][CH:24]=1>[O-2].[O-2].[Mn+4].O1CCOCC1>[Cl:1][C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[C:9]([C:12]([C:14]3[N:18]([CH3:19])[CH:17]=[N:16][CH:15]=3)=[O:13])[CH:10]=2)[N:5]=[C:4]([O:20][CH3:21])[C:3]=1[CH2:22][C:23]1[CH:24]=[CH:25][C:26]([C:29]([F:31])([F:30])[F:32])=[CH:27][CH:28]=1

Participants

Conditions

Temperature: 50 °C

Procedure

To a flask containing (4-chloro-2-methoxy-3-(4-(trifluoromethyl)benzyl)quinolin-6-yl)(1-methyl-1H-imidazol-5-yl)methanol (2.3 g, 4.98 mmol, Intermediate 80: step a) was added 1,4-dioxane (80 mL) to give a suspension at room temperature. The flask was fitted with a reflux condenser and heated briefly to 50° C. which resulted in a homogeneous solution. Then, activated manganese dioxide (1.73 g, 19.9 mmol) was introduced and the temperature was raised to 80° C. After 65 minutes, the reaction mixture was filtered through Celite® and rinsed with warm THF. The effluent was concentrated to give the title compound as a white solid.

Workup

customto give a suspension at room temperature
customThe flask was fitted with a reflux condenser
customresulted in a homogeneous solution
temperaturethe temperature was raised to 80° C
filtrationthe reaction mixture was filtered through Celite®
washrinsed with warm THF
concentrationThe effluent was concentrated

Sources & evidence

ORD record: ord-e5995635d88942aea52261ffbae36ac3
Source dataset: uspto-grants-2016_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09284308B2

Reaction notes

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