首次从五组分Fe 3 O 4 TDSN-Bi(III)催化的芳基醛,芳基胺和乙酰乙酸乙酯的反应中获得不对称的1,2,5,6-四氢吡啶-3-羧酸酯。该磁性可分离的催化剂能够将两种不同的芳基胺或两种不同的芳基醛选择性地掺入产物中,并提供优异的收率,较短的反应时间,温和的反应条件,令人满意的催化剂可回收性和较低的催化剂负载量。
Mass spectroscopy. Results: One-pot multi-component condensation of 2-naphthol with arylaldehydes and thioacetamide catalyzed by nano-[DSPECDA][HSO4] under green, mild and solvent-freeconditions led to 1-thioamidoalkyl-2-naphthols in high yields. The nanocatalyst was also used for the preparation of functionalized tetrahydropyridines by the one-pot multi-component reaction of anilines, arylaldehydes
目的和目的:Nano-2-[N',N'-dimethyl-N'-(silica-n-丙基)ethanaminium chloride]-N,N-dimethylaminium bisulfate (nano-[DSPECDA][HSO4])用作一种高效的非均相二氧化硅基纳米结构催化剂,用于合成 1-硫代氨基烷基-2-萘酚和取代的四氢吡啶。 材料与方法:预期产品在温和条件下制备。在这项工作中,合成了三种新型 1-硫代酰胺烷基-2-萘酚和两种新型四氢吡啶衍生物,并通过 IR、1 H 和13 C NMR 和质谱进行了表征。 结果:纳米-[DSPECDA][HSO 4 ] 催化2-萘酚与芳醛和硫代乙酰胺在绿色、温和、无溶剂条件下的一锅多组分缩合反应得到高收率的1-硫代氨基烷基-2-萘酚。该纳米催化剂还用于在无溶剂和温和条件下通过苯胺、芳基醛和乙酰乙酸乙酯的一锅多组分反应制备官能化四氢吡啶。 结论:
NO2-Fe(III)PcCl@C -catalyzed one-pot synthesis of tetrahydropyridine derivatives
efficient, one-pot synthesis of functionalized tetrahydropyridines by multicomponent condensation of ethyl acetoacetate, two equivalents of aromaticaldehyde, and aromatic amine in the presence of a catalytic amount of NO2-Fe(III)PcCl@C is reported. In this way, a series of pharmacologically interesting substitutedpyridine derivatives were obtained in moderate to good yields.
Moreover, some of themhavebeenfoundtobeusefulasinhibitorsofaminopeptidaseandalpha-glucosidase. Numerous recent methods reported for the synthesis of highly substituted piperidines use various catalytic systems such as bismuth nitrate, molecular iodine, bromodimethyl-sulfonium bromide (BDMS), tetra(n-butyl)ammonium tribromide (TBATB), InCl3, 21 CAN, ZrOCl2.8H2O, 23 picric acid, ionicliquids, ZrCl4, 26
Nano-Mn-[4-Benzyloxyphenyl-salicylaldimine-methylpyranopyrazole-carbonitrile]Cl<sub>2</sub> as a New Schiff Base Complex and Catalyst for the Synthesis of Highly Substituted Tetrahydropyridines
(2021). Nano-Mn-[4-Benzyloxyphenyl-salicylaldimine-methylpyranopyrazole-carbonitrile]Cl2 as a New Schiff Base Complex and Catalyst for the Synthesis of Highly Substituted Tetrahydropyridines. Organic Preparations and Procedures International: Vol. 53, No. 4, pp. 402-412.
Cerium Ammonium Nitrate-Catalyzed Multicomponent Reaction for Efficient Synthesis of Functionalized Tetrahydropyridines
作者:Hong-Juan Wang、Li-Ping Mo、Zhan-Hui Zhang
DOI:10.1021/co100055x
日期:2011.3.14
A highly atom-economic one-pot synthesis of functionalized tetrahydropyridines by a multicomponent condensation reaction of β-ketoester, two equivalents of aromatic aldehyde, and two equivalents of amine in the presence of a catalytic amount of cerium ammonium nitrate (CAN) is reported. In this way, a series of pharmacologically interesting substituted piperidine derivatives were obtained in moderate