2,6-Dimethylmorpholine → 6-Chloro-4-(5-{[(2R,6R)-2,6-dimethyl-4-morpholinyl]methyl}-1,3-oxazol-2-yl)-1-(phenylsulfonyl)-1H-indazole

HRID 520565Notes

Reaction equation

Br[CH2:2][C:3]1[O:7][C:6]([C:8]2[CH:16]=[C:15]([Cl:17])[CH:14]=[C:13]3[C:9]=2[CH:10]=[N:11][N:12]3[S:18]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)(=[O:20])=[O:19])=[N:5][CH:4]=1.[CH3:27][CH:28]1[O:33][CH:32]([CH3:34])[CH2:31][NH:30][CH2:29]1>ClCCl>[Cl:17][C:15]1[CH:14]=[C:13]2[C:9]([CH:10]=[N:11][N:12]2[S:18]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)(=[O:19])=[O:20])=[C:8]([C:6]2[O:7][C:3]([CH2:2][N:30]3[CH2:29][C@@H:28]([CH3:27])[O:33][C@H:32]([CH3:34])[CH2:31]3)=[CH:4][N:5]=2)[CH:16]=1

Participants

Conditions

Temperature: 20 °C

Procedure

To a solution of 4-[5-(bromomethyl)-1,3-oxazol-2-yl]-6-chloro-1-(phenylsulfonyl)-1H-indazole (750 mg, 1.657 mmol) in dichloromethane (50 mL) stirred in air at room temp, was added neat 2,6-dimethylmorpholine (191 mg, 1.657 mmol, available from Aldrich as a mixture of isomers). The reaction mixture was stirred at 20° C. for 20 hr. Volatiles were removed using a rotary evaporator then the crude material was pre-absorbed onto Fluorosil™ and purified by column chromatography on silica (100 g) using a 0-100% ethyl acetate-cyclohexane gradient over 60 mins. Two diastereoisomers were isolated. Appropriate fractions were combined and evaporated in vacuo to give the title compound as a yellow oil (226 mg).

Workup

additionavailable from Aldrich as a mixture of isomers)
customVolatiles were removed
customa rotary evaporator
customthe crude material was pre-absorbed onto Fluorosil™
custompurified by column chromatography on silica (100 g)
customover 60 mins
customTwo diastereoisomers were isolated
customevaporated in vacuo

Sources & evidence

ORD record: ord-f2efd0e386ae4aa7ba2b2247e83581fd
Source dataset: uspto-grants-2016_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09326987B2

Reaction notes

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