Stannane, tributyl(methoxymethyl)- → 3-{1-(1,3-Benzodioxol-5-yl)-2-[(2-methoxy-4-methylphenyl)sulfonamido]-2-oxo-ethyl}-6-(methoxymethyl)-1-methyl-1H-indole

HRID 369352Notes

Reaction equation

HRID 369352 reaction equation
[O:1]1[C:5]2[CH:6]=[CH:7][C:8]([CH:10]([C:26]3[C:34]4[C:29](=[CH:30][C:31](Br)=[CH:32][CH:33]=4)[N:28]([CH3:36])[CH:27]=3)[C:11]([NH:13][S:14]([C:17]3[CH:22]=[CH:21][C:20]([CH3:23])=[CH:19][C:18]=3[O:24][CH3:25])(=[O:16])=[O:15])=[O:12])=[CH:9][C:4]=2[O:3][CH2:2]1.[CH3:37][O:38][CH2:39][Sn](CCCC)(CCCC)CCCC>O1CCOCC1.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[Pd]>[O:1]1[C:5]2[CH:6]=[CH:7][C:8]([CH:10]([C:26]3[C:34]4[C:29](=[CH:30][C:31]([CH2:37][O:38][CH3:39])=[CH:32][CH:33]=4)[N:28]([CH3:36])[CH:27]=3)[C:11]([NH:13][S:14]([C:17]3[CH:22]=[CH:21][C:20]([CH3:23])=[CH:19][C:18]=3[O:24][CH3:25])(=[O:16])=[O:15])=[O:12])=[CH:9][C:4]=2[O:3][CH2:2]1

Participants

5

Reactant 2

HCID 11088958Stannane, tributyl(methoxymethyl)-HCID 224672573-{1-(1,3-benzodioxol-5-yl)-2-[(2-methoxy-4-methylphenyl)sulfonamido]-2-oxoethyl}-6-bromo-1-methyl-1H-indole

Product 1

HCID 224672303-{1-(1,3-Benzodioxol-5-yl)-2-[(2-methoxy-4-methylphenyl)sulfonamido]-2-oxo-ethyl}-6-(methoxymethyl)-1-methyl-1H-indoleYield 11.6%

Reagents, catalysts & solvents 2

HCID 11979704Tetrakis(triphenylphosphine)palladiumCatalyst2×HCID 312751,4-DioxaneSolvent

Procedure

To a solution of 3-{1-(1,3-benzodioxol-5yl)-2-[(2-methoxy-4-methylphenyl)sulfonamido]-2-oxoethyl}-6-bromo-1-methyl-1H-indole (from Example 85, 300 mg, 0.53 mmol) in 1,4-dioxane (1.5 ml) under a nitrogen atmosphere was added methoxymethyltributyl-stannane (220 mg, 0.66 mmol), followed by tetrakis(triphenylphosphine)palladium(O) (35 mg). The mixture was heated to reflux for 16 hours, and then cooled. An additional portion of tetrakis(triphenylphosphine)palladium(O) (30 mg) was added, and reflux was continued for a further 8 hours. The solvent was removed in vacuo, and the residue was flash chromatographed using a gradient elution of a mixture of 1% methanol and 99% dichloromethane, through to 5% methanol and 95% dichloromethane, to give the title compound (33 mg).

Workup

  1. temperatureThe mixture was heated
  2. temperatureto reflux for 16 hours
  3. temperaturecooled
  4. temperaturereflux
  5. customThe solvent was removed in vacuo
  6. customchromatographed
  7. washa gradient elution of a mixture of 1% methanol and 99% dichloromethane

Sources & evidence

ORD record
ord-cb40bdb5962642b8b9329ff286da9302
Source dataset
uspto-grants-2000_10
Patent number
US06136843

Reaction notes

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