(1H-benzo[d]imidazol-2-yl)(4-(3-(tetrahydro-2H-pyran-4-yl)pyridin-2-yloxy)phenyl)methanol → 1h-Benzimidazol-2-Yl(4-{[3-(Tetrahydro-2h-Pyran-4-Yl)pyridin-2-Yl]oxy}phenyl)methanone

HRID 410203Notes

Reaction equation

[NH:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[CH:10]([C:12]1[CH:17]=[CH:16][C:15]([O:18][C:19]2[C:24]([CH:25]3[CH2:30][CH2:29][O:28][CH2:27][CH2:26]3)=[CH:23][CH:22]=[CH:21][N:20]=2)=[CH:14][CH:13]=1)[OH:11]>C(Cl)(Cl)Cl.C1COCC1.[O-2].[O-2].[Mn+4]>[NH:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[C:10]([C:12]1[CH:13]=[CH:14][C:15]([O:18][C:19]2[C:24]([CH:25]3[CH2:26][CH2:27][O:28][CH2:29][CH2:30]3)=[CH:23][CH:22]=[CH:21][N:20]=2)=[CH:16][CH:17]=1)=[O:11]

Participants

Conditions

Temperature: 50 °C

Procedure

A suspension of (1H-benzo[d]imidazol-2-yl)(4-(3-(tetrahydro-2H-pyran-4-yl)pyridin-2-yloxy)phenyl)methanol (0.500 g, 1.245 mmol) in Chloroform (50 mL) and THF (50.0 mL) was treated with manganese dioxide (1.083 g, 12.45 mmol) at RT under nitrogen. The mixture was heated to 50° C. while stirring. After 40 mins, the reaction was filtered while warm through a small pad of celite. The filtrate was reduced and purified by column chromatography on silica gel using a gradient of 0 to 10% MeOH is DCM. The pure fractions were reduced and the residue was triturated in ethyl ether to give (1H-benzo[d]imidazol-2-yl)(4-(3-(tetrahydro-2H-pyran-4-yl)pyridin-2-yloxy)phenyl)methanone as an off-white solid. MS (ESI, pos. ion) m/z: 399.9 (M+1). IC50 (uM) +++++.

Workup

filtrationthe reaction was filtered
temperaturewhile warm through a small pad of celite
custompurified by column chromatography on silica gel using a gradient of 0 to 10% MeOH
customthe residue was triturated in ethyl ether

Sources & evidence

ORD record: ord-235287e2592d4fbdb67aeb25ef9ecb10
Source dataset: uspto-grants-2014_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08759532B2

Reaction notes

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