1,4-Dioxane → 1-Benzenesulfonyl-5-methanesulfonyl-2-(3-pyridyl)indole

HRID 1432246Notes

Reaction equation

C[Si]([C:5]#[C:6][C:7]1[CH:8]=[N:9][CH:10]=[CH:11][CH:12]=1)(C)C.[C:13]1([S:19]([NH:22][C:23]2[C:28](I)=[CH:27][C:26]([S:30]([CH3:33])(=[O:32])=[O:31])=[CH:25][CH:24]=2)(=[O:21])=[O:20])[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1.C([O-])(=O)C.[K+].O1CCOCC1>Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.C(OCC)(=O)C.O>[C:13]1([S:19]([N:22]2[C:23]3[C:24](=[CH:25][C:26]([S:30]([CH3:33])(=[O:32])=[O:31])=[CH:27][CH:28]=3)[CH:5]=[C:6]2[C:7]2[CH:8]=[N:9][CH:10]=[CH:11][CH:12]=2)(=[O:20])=[O:21])[CH:14]=[CH:15][CH:16]=[CH:17][CH:18]=1

Participants

Conditions

Temperature: 100 °C

Procedure

A mixture of 3-trimethylsilylethynylpyridine (1.07 g), 2-benzenesulfonylamino-3-iodo-5-methanesulfonylbenzene (1.75 g), potassium acetate (1.60 g), cuprous iodide (60 mg), dichlorobis(triphenylphosphine)palladium (0.20 g) and 1,4-dioxane (4 ml) was stirred at 100° C. for 12 hours under nitrogen atmosphere. To the reaction solution were added water and ethyl acetate. The insolubles were filtered off. The filtrate was extracted with ethyl acetate, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The resulting residue was subjected to silica gel column chromatography (hexane:ethyl acetate=1:3) to obtain 1.04 g of the desired product.

Workup

filtrationThe insolubles were filtered off
extractionThe filtrate was extracted with ethyl acetate
dry with materialdried over anhydrous sodium sulfate
filtrationfiltered
concentrationconcentrated under reduced pressure

Sources & evidence

ORD record: ord-6e4de20a21ef493895c8a9c5532b031c
Source dataset: uspto-grants-2009_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07612070B2

Reaction notes

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