8-chloro-6-(2-chlorophenyl)-2-methyl-4H-imidazo[1,2-a][1,4]benzodiazepine-1-carboxaldehyde → 1H-1,4-Benzodiazepine
Reaktionsgleichung
Cl[C:2]1[CH:3]=[CH:4][C:5]2[N:11]3C(C=O)=C(C)N=[C:10]3[CH2:9][N:8]=[C:7](C3C=CC=CC=3Cl)[C:6]=2[CH:25]=1>C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[Cl-].[Rh].C1C=CC=CC=1>[NH:11]1[C:5]2[CH:4]=[CH:3][CH:2]=[CH:25][C:6]=2[CH:7]=[N:8][CH:9]=[CH:10]1Komponenten
4
Edukt 1
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 2
Versuchsvorschrift
A mixture of 1.0 g. of 8-chloro-6-phenyl-2,4-dimethyl-4H-imidazo[1,2-a][1,4]benzodiazepine-1-carboxaldehyde (II) and 0.1 g. of tris(triphenylphosphine)rhodium chloride in 50 ml. of benzene is refluxed for about 6 hours. The mixture is then allowed to cool and filtered to remove the catalyst. The filtrate thus obtained is concentrated in vacuo to give 8-chloro-6-phenyl-2,4-dimethyl-4H-imidazo[1,2-a][1,4-benzodiazepine, which is further purified by chromatography and/or crystallization.