2,4-Dichloro-5-methoxyaniline → HCID 178486403, Verbindung

HRID 2213827

Reaktionsgleichung

Cl[C:2]1[C:11]2[C:6](=[CH:7][C:8]3[CH:15]=[C:14]([OH:16])[C:13]([O:17][CH3:18])=[CH:12][C:9]=3[CH:10]=2)[N:5]=[CH:4][C:3]=1[C:19]#[N:20].[Cl:21][C:22]1[CH:28]=[C:27]([Cl:29])[C:26]([O:30][CH3:31])=[CH:25][C:23]=1[NH2:24].Cl.N1C=CC=CC=1>C(OCCO)C.C(=O)(O)[O-].[Na+]>[Cl:21][C:22]1[CH:28]=[C:27]([Cl:29])[C:26]([O:30][CH3:31])=[CH:25][C:23]=1[NH:24][C:2]1[C:11]2[C:6](=[CH:7][C:8]3[CH:15]=[C:14]([OH:16])[C:13]([O:17][CH3:18])=[CH:12][C:9]=3[CH:10]=2)[N:5]=[CH:4][C:3]=1[C:19]#[N:20]

Komponenten

Reaktionsbedingungen

Temperatur: 120 °C

Versuchsvorschrift

A mixture of 0.7 g (2.46 mmol) of 4-chloro-8-hydroxy-7-methoxybenzo[g]quinoline-3-carbonitrile, 0.57 g (2.95 mmol) of 2,4-dichloro-5-methoxyaniline and 0.28 g (2.46 mmol) of pyridine hydrochloride in 7 mL of 2-ethoxyethanol is heated at 120° C. for 2 hours, then cooled to room temperature. The product mixture is diluted with saturated solution of sodium bicarbonate and stirred for 15 minutes. The resulting solid is collected by filtration, washed with water and dried. The crude product is purified by silica gel chromatography, utilizing a 98:2 to 90:10 gradient of methylene chloride/methanol to give 0.71 g of 4-(2,4-dichloro-5-methoxyphenylamino)-8-hydroxy-7-methoxybenzo[g]quinoline-3-carbonitrile as a yellow solid, mp, 238–240° C.

Aufarbeitung

temperaturecooled to room temperature
filtrationThe resulting solid is collected by filtration
washwashed with water
customdried
customThe crude product is purified by silica gel chromatography

Quellen und Nachweise

ORD-Eintrag: ord-5e1cc48af3284ba49d124e503bd5f601
Quelldatensatz: uspto-grants-2006_09
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US07105531B2

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