Addition of cylohexanone to chalcones, obtained from the appropriate acetophenone and benzaldehyde derivatives, under solvent-free conditions gave 1,5-diketones in good yields. Treatment of 1,5-diketones with ammonium acetate in acetic acid afforded directly 2,4-diaryl-5,6,7,8-tetrahydroquinolinederivatives in high yields. The structures of were elucidated by 1H NMR, 13C NMR, IR, and elemental analysis
除环己酮,以查耳酮,从相应的苯乙酮和苯甲醛衍生物得到的,无溶剂的条件下的,得到在良好的产率1,5-二酮类。1,5-二酮的治疗乙酸中的乙酸铵直接提供2,4-二芳基-5,6,7,8-四氢喹啉衍生物高产。的结构通过1 H NMR,13 C NMR,IR和元素分析来阐明。J.杂环化学。(2010)。
Hutchins et al., Journal of the Chemical Society, 1938, p. 1882,1884
作者:Hutchins et al.
DOI:——
日期:——
Azaheterocycles based on 1,5-diketones, cyclic ?-ketols, and ethanolamine
作者:T. G. Nikolaeva、P. V. Reshetov、A. P. Kriven'ko、V. G. Kharchenko
DOI:10.1007/bf00505762
日期:1983.10
Study of the state of rhodium in the potassium rhodiumundecatungstosilicate/alumina system by diffuse-reflectance IR spectroscopy
作者:P. A. Korovchenko、R. A. Gazarov、L. M. Kustov
DOI:10.1007/bf02495757
日期:2000.7
Adsorption of CO on the catalytic system K-5[SiW11RhO39]/Al2O3 was studied by diffuse-reflectance IR spectroscopy. The electronic state of rhodium and thermal stability of the system in the redox cycles were studied. The oxidized heteropolycompound (HPC) contains the charged forms Rh+, Rh2+, and Rh3+. Their ratio strongly depends on the pre-treatment temperature of the sample. In the reduced HPC two main forms of rhodium exist: the ionic Rh+ and metallic Rh-0. The supported HPC structure is stable in an oxidative medium at temperatures below -900 K. The properties of the K-5[SiW1 1RhO39]/Al2O3 system are retained in the redox cycles up to -670 K, and the highly dispersed state of rhodium is observed up to 900 K.
Saturated nitrogen-containing heterocycles. 18. Catalytic synthesis and formation mechanism of substitutedcis-decahydroquinolines and their isologues