2687-88-9Relevant academic research and scientific papers
Mesoporous Aluminosilicates in the Synthesis of N-Heterocyclic Compounds
Agliullin, M. R.,Bikbaeva, V. R.,Bubennov, S. V.,Filippova, N. A.,Gataulin, A. R.,Grigor’eva, N. G.,Kostyleva, S. A.,Kutepov, B. I.,Narender, Nama
, p. 733 - 743 (2020/02/25)
Abstract: The catalytic properties of samples of amorphous mesoporous aluminosilicate ASM with different Si/Al molar ratios (40, 80, 160) were studied in the synthesis of practically important pyridines (by the interaction of С2–С5 alcohols with formaldehyde and ammonia, cyclocondensation of acetaldehyde and propionic aldehyde with ammonia), dialkylquinolines and alkyltetrahydroquinolines (by reaction of aniline with C3, C4 aldehydes) and alkyldihydroquinolines (by interaction of aniline with ketones, acetone and acetophenone). It is found that mesoporous aluminosilicate ASM sample with a molar ratio of Si/Al = 40, which has the highest acidity among the studied samples, exhibits the highest activity and selectivity in these reactions.
Synthesis of 2-ethyl-3,5-dimethylpyridine by heterocyclization of allylamine, cyclopropylamine, and diallylamine in the presence of palladium complexes
Atnabaeva,Muslimov,Khusnutdinov,Dzhemilev
body text, p. 1831 - 1835 (2009/09/06)
2-Ethyl-3,5-dimethylpyridine was synthesized by disproportionation and heterocyclization of allylamine, cyclopropylamine, and diallylamine in the presence of palladium catalysts.
Synthesis of alkyl- and aryl-substituted pyridines from (α,β-unsaturated) imines or oximes and carbonyl compounds
Vijn,Arts,Green,Castelijns
, p. 573 - 578 (2007/10/02)
Reaction of a variety of (α,β-unsaturated) imines or oximes with aliphatic aldehydes or cyclic ketones in the presence of a secondary amine afforded alkyl-, and/or aryl-, and/or cycloalkyl-substituted pyridines. To explain their formation, a hetero Diels-Alder reaction has been postulated, in which an 1-aza-1,3-butadiene reacts with an in situ generated enamine.
SYNTHESIS OF ALKYL-SUBSTITUTED PYRIDINES FROM CO, C2H4, H2, and NH3 ON HETEROGENEOUS CATALYSTS
Kosolapova, B. S.,Levin, D. Z.,Sominskii, S. D.,Rar, L. F.,Mortikov, E. S.,Lapidus, A. L.
, p. 2244 - 2248 (2007/10/02)
The reaction of preparation of alkyl-substituted pyridines by hydroformylation of ethylene in the presence of ammonia on heterogeneous Rh-containing catalysts with the formation of 2-ethyl-3,5-dimethylpyridine (I) as the basic product with up to 70-80percent conversion of gases and up to an 80 wt. percent concentration of the basic product was investigated.The dependence of the activity and selectivity of the catalysts on the concentration of Rh and nature of the support was determined.A correlation between the activity of the catalysts and their acid properties was established by IR spectroscopy.
