ADVANCES IN THE SYNTHESIS OF N-HETEROCYCLIC COMPOUNDS OVER NEW ZEOLITE CATALYSTS

Heterogeneous catalytic methods for obtaining 2,2,4-trimethyl-2,3-dihydro-1H-1,5-benzodiazepine, 3,5-lutidine, 2-methyl-3-n-propyl-1H-indole, 3-methyl-2-ethylquinoline over new catalysts based on granulated hierarchical zeolites H-Yh and H-ZSM-5h have been developed. The dependence of the activity and selectivity of zeolites H-Yh and H-ZSM-5h on their structural type and physicochemical characteristics has been established in reactions of: 1) propanol-1 with formaldehyde and ammonia, 2) aniline with 1,2-propanediol, 3) 1,2-phenylenediamine with acetone. Zeolite H-Yh provides selective production of 2,2,4-trimethyl-2,3-dihydro 1H-1,5-benzodiazepine (100%) and 2-methyl-3-n-propyl-1H-indole (35%), and zeolite H-ZSM-5h – 3,5-lutidine (72%) and 2-ethyl-3-methylquinoline (60%).