Water → HCID 67777644, compound

HRID 1026306Notes

Reaction equation

[CH:1]1([CH2:4][O:5][C:6]2[CH:7]=[CH:8][C:9]3[C:13]([CH:14]=2)=[N:12][N:11]([C:15]2[CH:20]=[CH:19][C:18]([O:21][Si:22]([CH:29]([CH3:31])[CH3:30])([CH:26]([CH3:28])[CH3:27])[CH:23]([CH3:25])[CH3:24])=[CH:17][CH:16]=2)[CH:10]=3)[CH2:3][CH2:2]1.[Br:32]N1C(=O)CCC1=O.N(C(C)(C)C#N)=NC(C)(C)C#N.O>C(OCC)(=O)C>[Br:32][C:14]1[C:13]2[C:9](=[CH:10][N:11]([C:15]3[CH:20]=[CH:19][C:18]([O:21][Si:22]([CH:26]([CH3:28])[CH3:27])([CH:23]([CH3:25])[CH3:24])[CH:29]([CH3:31])[CH3:30])=[CH:17][CH:16]=3)[N:12]=2)[CH:8]=[CH:7][C:6]=1[O:5][CH2:4][CH:1]1[CH2:2][CH2:3]1

Participants

Conditions

Temperature: 80 °C

Procedure

To a solution of 6-(cyclopropylmethoxy)-2-(4-{[tris(1-methylethyl)silyl]oxy}phenyl)-2H-indazole (1.31 g) in ethyl acetate (15 mL) were added N-bromosuccinimide (0.56 g) and azobisisobutyronitrile (99 mg), and the mixture was stirred at 80° C. for 3 hr. Water was added to the reaction mixture, and the mixture was extracted twice with ethyl acetate. The combined organic layer was washed with saturated brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (hexane/ethyl acetate) to give the title compound as an orange oil (1.41 g).

Workup

extractionthe mixture was extracted twice with ethyl acetate
washThe combined organic layer was washed with saturated brine
dry with materialdried over anhydrous magnesium sulfate
customthe solvent was evaporated under reduced pressure
customThe residue was purified by silica gel column chromatography (hexane/ethyl acetate)

Sources & evidence

ORD record: ord-f6c2478a24c5436e803602d900930157
Source dataset: uspto-grants-2014_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08729102B2

Reaction notes

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