Citation:
LIU Jie, QIU Jun. Synthesis of Modified Mesoporous Zeolites FSM-16 Series and their Catalytic Performance for Michael Addition of 2-Methyl Indole to Cyclohex-2-enone[J]. Chinese Journal of Applied Chemistry,
;2014, 31(7): 806-811.
doi:
10.3724/SP.J.1095.2014.30458
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The modified mesoporous zeolites Al-FSM-16,Zr-FSM-16,and Al-Zr-ESM-16 were synthesized using cetyltrimethyl ammonium bromide(CTMAB) as the template,and characterized by XRD,IR,SEM,and BET.These catalysts were evaluated for synthesis of 3-(2-methyl-1H-indol-3-yl) cyclohexanone by catalytic Michael addition of 2-methylindole to cyclohex-2-enone under a solvent free condition.Al and Zr doping into the skeleton of the molecular sieve leads to larger pores molecular sieve,but the skeleton structure does not change significantly.Al or Zr doping increases the catalytic activity of FSM-16 molecular sieves and the Zr-FSM-16 molecular sieve has better activity.Under the following optimum reaction conditions:catalyst dosage 7.5%,molar ratio of cyclohex-2-enone to 2-methylindole being 1:1.1,reaction temperature 80℃ and reaction time 120 min,the yield of 3-(2-methyl-1H-indol-3-yl) cyclohexanone is up to 75.4%.
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