期刊
RUSSIAN CHEMICAL BULLETIN
卷 72, 期 10, 页码 2357-2365出版社
SPRINGER
DOI: 10.1007/s11172-023-4033-5
关键词
zeolites; hierarchical zeolites; mesoporous aluminosilicates; benzodiazepines; phenylenediamine; acetone
The catalytic properties of three different catalysts were studied in the reaction between 1,2-phenylenediamine and acetone. It was found that 0.95H-Yh zeolite was the most effective catalyst for the synthesis of 1,5-benzodiazepine, showing operational stability for three cycles.
The catalytic properties of zeolites (microporous H-Y and granular micro-mesomacroporous H-Yh) and amorphous mesoporous aluminosilicate ASM in the reaction of 1,2-phenylenediamine with acetone were studied. The main reaction product was 2,2,4-trimethyl-2,3-dihydro-1H-1,5-benzodiazepine (selectivity up to 99% at a 94% conversion of 1,2-phenylenediamine). For the synthesis of 1,5-benzodiazepine, the most effective was 0.95H-Yh, a granular zeolite with a hierarchical porous structure. The catalyst demonstrated operational stability for three cycles.
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