Ethanol → 1-(3,4-Dichlorobenzyl)-4,5-dicyanoimidazole

HRID 2052541

Reaktionsgleichung

Reaktionsgleichung von HRID 2052541
[NH2:1]/[C:2](=[C:5](\[NH:8][CH2:9][C:10]1[CH:15]=[CH:14][C:13]([Cl:16])=[C:12]([Cl:17])[CH:11]=1)/[C:6]#[N:7])/[C:3]#[N:4].S(=O)(=O)(O)O.[CH2:23](O)C>C(OC(OCC)OCC)C>[Cl:17][C:12]1[CH:11]=[C:10]([CH:15]=[CH:14][C:13]=1[Cl:16])[CH2:9][N:8]1[C:5]([C:6]#[N:7])=[C:2]([C:3]#[N:4])[N:1]=[CH:23]1

Komponenten

5

Edukt 3

HCID 702EthanolHCID 1118Sulfuric AcidHCID 129475012-Amino-3-(3,4-dichlorobenzylamino)maleonitrile

Produkt 1

HCID 129473981-(3,4-Dichlorobenzyl)-4,5-dicyanoimidazole

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 31214Ethyl orthoformateLösungsmittel

Versuchsvorschrift

2-Amino-3-(3,4-dichlorobenzylamino)maleonitrile (10.7 g) was heated on a steam bath in a mixture of ethanol (4 ml) and triethylorthoformate (12 g) containing concentrated sulphuric acid (0.02 ml) for 1 hour. The solution was evaporated to dryness to give a semi-solid, which was crystallised from ethanol (50 ml) to give 1-(3,4-dichlorobenzyl)-4,5-dicyanoimidazole (3.0 g), m.p. 131°-132.5° C., as pale yellow crystals.

Aufarbeitung

  1. customThe solution was evaporated to dryness
  2. customto give a semi-solid, which
  3. customwas crystallised from ethanol (50 ml)

Quellen und Nachweise

ORD-Eintrag
ord-8bb350697d914ab3b165bf4ec156f4f8
Quelldatensatz
uspto-grants-1980_01
Patentnummer
US04185992

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