Mixed Oxides as Highly Selective Catalysts for the Flash Pyrolysis of Phenacyl Benzotriazole: One-Pot Synthesis of Dibenzazepin-7-one

The one-pot synthesis of dibenzo[b,d]azepin-7-one (3) was selectively achieved from 1-phenacyl-1,2,3-benzotriazole (1) using the catalytic flash vacuum pyrolysis (cfvp) methodology. Catalysts with the scheelite structure ABO4 (A = Ca2+, Sr2+, Ba2+ and B = Mo6+, W6+) and fergusonite BiVO4 were explor...

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Bibliographic Details
Published inACS catalysis Vol. 3; no. 5; pp. 1020 - 1025
Main Authors Lener, German, Carbonio, Raúl E, Moyano, E. Laura
Format Journal Article
LanguageEnglish
Published American Chemical Society 03.05.2013
Subjects
catalysis
phenacyl benzotriazole
catalytic pyrolysis
dibenzazepinone
mixed oxides
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Summary:The one-pot synthesis of dibenzo[b,d]azepin-7-one (3) was selectively achieved from 1-phenacyl-1,2,3-benzotriazole (1) using the catalytic flash vacuum pyrolysis (cfvp) methodology. Catalysts with the scheelite structure ABO4 (A = Ca2+, Sr2+, Ba2+ and B = Mo6+, W6+) and fergusonite BiVO4 were explored in this new catalytic reaction. These oxides promoted high conversion of starting material at lower temperatures than those observed for noncatalytic reactions. The chemical nature of A and B cations in the scheelite structure showed a strong influence on the formation toward the desired azepinone. In addition, the catalyst’s morphology had a significant influence on the course of the cfvp reaction.
ISSN:2155-5435
2155-5435
DOI:10.1021/cs3008335