2,6-Lutidine → Methyl 2-(1,3-benzodioxol-5-yl)-2-(5-bromo-1-methyl-1H-3-indolyl)acetate

HRID 381326Notes

Reaction equation

CC1C=CC=C(C)N=1.[O:9]1[C:13]2[CH:14]=[CH:15][C:16]([CH:18](Br)[C:19]([O:21][CH3:22])=[O:20])=[CH:17][C:12]=2[O:11][CH2:10]1.[Br:24][C:25]1[CH:26]=[C:27]2[C:31](=[CH:32][CH:33]=1)[N:30]([CH3:34])[CH:29]=[CH:28]2>CN(C)C=O>[O:9]1[C:13]2[CH:14]=[CH:15][C:16]([CH:18]([C:28]3[C:27]4[C:31](=[CH:32][CH:33]=[C:25]([Br:24])[CH:26]=4)[N:30]([CH3:34])[CH:29]=3)[C:19]([O:21][CH3:22])=[O:20])=[CH:17][C:12]=2[O:11][CH2:10]1

Participants

Conditions

Temperature: 80 °C

Procedure

2,6-Dimethylpyridine (0.75 ml) was added to a stirred solution of methyl 2-(1,3-benzodioxol-5-yl)-2-bromoacetate (from Example 61(c), 1.75 g, 6.43 mmol) and 5-bromo-1-methylindole (from step (a), 1.35 g) in anhydrous dimethylformamide (10 ml) at ambient temperature, under a nitrogen atmosphere. The solution was heated at 80° C. for 8 hours. The reaction mixture was partitioned between diethylether and water, separated and the organic layer dried (magnesium sulphate) and evaporated in vacuo. The residue was flash chromatographed (using 50% dichloromethane and 50% hexane as eluant) to give the subtitle compound as a colourless oil (1.98 g).

Workup

customThe reaction mixture was partitioned between diethylether and water
customseparated
dry with materialthe organic layer dried (magnesium sulphate)
customevaporated in vacuo
customchromatographed (using 50% dichloromethane and 50% hexane as eluant)

Sources & evidence

ORD record: ord-9be6f5603bd24918b27575ffc0baa2f6
Source dataset: uspto-grants-2001_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06306852B1

Reaction notes

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