Benzo(d)thiazol-2-amine → 5-(Imidazo[2,1-b]benzothiazol-2-yl)-3-nitropyrocatechol

HRID 274471

Reaktionsgleichung

Reaktionsgleichung von HRID 274471
Br[CH2:2][C:3]([C:5]1[CH:10]=[C:9]([N+:11]([O-:13])=[O:12])[C:8]([OH:14])=[C:7]([OH:15])[CH:6]=1)=O.[NH2:16][C:17]1[S:18][C:19]2[CH:25]=[CH:24][CH:23]=[CH:22][C:20]=2[N:21]=1>C(O)C>[N:16]1[C:3]([C:5]2[CH:6]=[C:7]([OH:15])[C:8]([OH:14])=[C:9]([N+:11]([O-:13])=[O:12])[CH:10]=2)=[CH:2][N:21]2[C:20]3[CH:22]=[CH:23][CH:24]=[CH:25][C:19]=3[S:18][C:17]=12

Komponenten

4

Versuchsvorschrift

A mixture of 1.95 g of 2-bromo-3',4'-dihydroxy-5'-nitroacetophenone, 1.06 g of 2-aminobenzothiazole and 50 ml of ethanol is heated to boiling under reflux for 17 hours. The reaction mixture is then cooled to room temperature, whereupon the crystals are removed by filtration under suction. There is obtained 5-(imidazo[2,1-b]benzothiazol-2-yl)-3-nitropyrocatechol of m.p. 303°-305° (from N,N-dimethylformamide/methanol).

Aufarbeitung

  1. temperatureis heated
  2. temperatureunder reflux for 17 hours
  3. customare removed by filtration under suction

Quellen und Nachweise

ORD-Eintrag
ord-c6b1a535c5ee4613b184f2f0f99a485a
Quelldatensatz
uspto-grants-1995_02
Patentnummer
US05389653

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