Toluene → 1-(2-Cyclopropyl-3-methylimidazo[1,2-a]pyridin-6-yl)-4-((5-(difluoromethyl)-3-thienyl)methoxy)pyridin-2(1H)-one

HRID 2203014Notes

Reaction equation

Br[C:2]1[CH:7]=[CH:6][N:5]([C:8]2[CH:9]=[CH:10][C:11]3[N:12]([C:14]([CH3:20])=[C:15]([CH:17]4[CH2:19][CH2:18]4)[N:16]=3)[CH:13]=2)[C:4](=[O:21])[CH:3]=1.[F:22][CH:23]([F:31])[C:24]1[S:28][CH:27]=[C:26]([CH2:29][OH:30])[CH:25]=1.CC(C)([O-])C.[K+].C1(C)C=CC=CC=1>O>[CH:17]1([C:15]2[N:16]=[C:11]3[CH:10]=[CH:9][C:8]([N:5]4[CH:6]=[CH:7][C:2]([O:30][CH2:29][C:26]5[CH:25]=[C:24]([CH:23]([F:31])[F:22])[S:28][CH:27]=5)=[CH:3][C:4]4=[O:21])=[CH:13][N:12]3[C:14]=2[CH3:20])[CH2:19][CH2:18]1

Participants

Conditions

Temperature: 100 °C

Procedure

A mixture of 4-bromo-1-(2-cyclopropyl-3-methylimidazo[1,2-a]pyridin-6-yl)pyridin-2(1H)-one (100 mg), (5-(difluoromethyl)-3-thienyl)methanol (88 mg), potassium tert-butoxide (109 mg) and toluene (3 ml) was heated at 100° C. for 1 h. The reaction mixture was then cooled to room temperature, poured into water and extracted with EtOAc-THF. The extract was washed with brine, dried over MgSO4, concentrated and purified by NH silica gel column chromatography (hexane/EtOAc). The resulting solid was recrystallized from IPA-IPE to give the title compound (64.1 mg) as a white solid.

Workup

temperatureThe reaction mixture was then cooled to room temperature
extractionextracted with EtOAc-THF
washThe extract was washed with brine
dry with materialdried over MgSO4
concentrationconcentrated
custompurified by NH silica gel column chromatography (hexane/EtOAc)
customThe resulting solid was recrystallized from IPA-IPE

Sources & evidence

ORD record: ord-af5d5c94ad754756aa1c7a0c6fb3182c
Source dataset: uspto-grants-2016_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09365540B2

Reaction notes

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