Dichloromethane → 2-[2-(N,N-diethylamino)ethyl]-4-(3,4-dimethoxyphenyl)-6,7-dimethoxyquinazoline

HRID 1458943Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1458943
Br[CH2:2][CH2:3][C:4]1[N:13]=[C:12]([C:14]2[CH:19]=[CH:18][C:17]([O:20][CH3:21])=[C:16]([O:22][CH3:23])[CH:15]=2)[C:11]2[C:6](=[CH:7][C:8]([O:26][CH3:27])=[C:9]([O:24][CH3:25])[CH:10]=2)[N:5]=1.[CH2:28]([NH:30][CH2:31][CH3:32])[CH3:29].ClCCl>O>[CH2:28]([N:30]([CH2:2][CH2:3][C:4]1[N:13]=[C:12]([C:14]2[CH:19]=[CH:18][C:17]([O:20][CH3:21])=[C:16]([O:22][CH3:23])[CH:15]=2)[C:11]2[C:6](=[CH:7][C:8]([O:26][CH3:27])=[C:9]([O:24][CH3:25])[CH:10]=2)[N:5]=1)[CH2:31][CH3:32])[CH3:29]

Komponenten

5

Edukt 3

HCID 6344DichloromethaneHCID 8021DiethylamineHCID 220975842-(2-Bromoethyl)-4-(3,4-dimethoxyphenyl)-6,7-dimethoxyquinazoline

Produkt 1

HCID 220976622-[2-(N,N-diethylamino)ethyl]-4-(3,4-dimethoxyphenyl)-6,7-dimethoxyquinazolineAusbeute 8,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

A mixture of 2-(2-bromoethyl)-4-(3,4-dimethoxyphenyl)-6,7-dimethoxyquinazoline (0.486 g), diethylamine (0.41 g) and dichloromethane (10 ml) was stirred under reflux for 6 hours. The reaction mixture was poured into water and extracted with dichloromethane. The dichloromethane layer was washed with water and dried over magnesium sulfate, and the solvent was evaporated. The residue was subjected to column chromatography on silica gel. The fractions eluted with chloroform-ethyl acetate (1/1, v/v) gave 2-[2-(N,N-diethylamino)ethyl]-4-(3,4-dimethoxyphenyl)-6,7-dimethoxyquinazoline (0.040 g, 8%) which was then recrystallized from ethyl acetate-hexane. Colorless prisms. mp. 164°-166° C.

Aufarbeitung

  1. temperatureunder reflux for 6 hours
  2. extractionextracted with dichloromethane
  3. washThe dichloromethane layer was washed with water
  4. dry with materialdried over magnesium sulfate
  5. customthe solvent was evaporated
  6. washThe fractions eluted with chloroform-ethyl acetate (1/1

Quellen und Nachweise

ORD-Eintrag
ord-7428576384904210ac958682fce66b5f
Quelldatensatz
uspto-grants-1998_12
Patentnummer
US05852039

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