期刊论文

Zhou, Cong-Shan;Chao, Zi-Sheng

英文

Catalysis Communications

1566-7367

2018

115

21-25

10.1016/j.catcom.2018.06.024

Table 1 shows catalytic performances of various catalysts for microwave-assisted synthesis of quinoline from ADA and aniline. When various parent zeolites are used as catalysts respectively, the yield of quinoline is extremely low with low conversion of ADA. The completion of this reaction is considered to undergo two steps, containing decomposition of ADA to acrolein and/or other intermediate and subsequent condensation with aniline to quinoline, as shown in Eqs. (1). CH2=CH−CHOEt2→MW/Cat.CH2=CH

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A facile and solvent-free microwave-assisted approach to quinoline was developed by utilizing both acrolein diethyl acetal and aniline as reagents, firstly employing Ni/Beta zeolite as mild, ecofriendly and low-cost solid catalyst. As high as 83% yield of quinoline was quickly achieved at a short microwave time. The results indicated that the effect of Ni on Beta zeolite not only significantly promoted conversion of acrolein diethyl acetal to effective intermediate but also dramatically accelerated dehydrogenation rate of tetrahydroqu...