and their catalytic activity is relied on the dopingacid, acidity and ANI/HA weight ratio in the fabrication. Wherein, PANI@HA synthesized with HCl as dopingacid to condition the acidity at 1 M and 2.04 ANI/HA weight ratio (PANI@HA/1 M/2.04-HCl) demonstrates the highest catalytic activity (98.17% conversion and 99.50% selectivity to 1, 2-cyclohexanediol). The cyclohexene selective catalytic activity
通过在原核埃洛石纳米管上进行苯胺(ANI)化学聚合反应,制备了具有增强的环己烯选择性氧化活性的一维聚苯胺@卤化铝(PANI @ HA)纳米管。通过在制造过程中方便地控制掺杂酸,酸度和ANI / HA重量比,具有可控制的掺杂度,氧化还原状态和含量的PANI在埃洛石纳米管上生长。环己烯的选择性氧化结果表明,PANI @ HA纳米管在无溶剂的H 2 O 2反应体系中是有效的催化剂作为氧化剂,它们的催化活性取决于制造过程中的掺杂酸,酸度和ANI / HA重量比。其中,以HCl为掺杂酸合成的PANI @ HA以1M和2.04 ANI / HA重量比(PANI @ HA / 1 M / 2.04-HCl)调节酸度表现出最高的催化活性(98.17%的转化率和99.50%的选择性)至1,2-环己二醇)。环己烯的选择性催化活性与PANI @ HA中的PANI掺杂程度非常匹配。和最佳的反应条件是20毫克催化剂,2
Zeolite Y encaged Ru(III) and Fe(III) complexes for oxidation of styrene, cyclohexene, limonene, and α-pinene: An eye-catching impact of H2SO4 on product selectivity
作者:Dinesh R. Godhani、Haresh D. Nakum、Digvijaysinh K. Parmar、Jignasu P. Mehta、Nisheeth C. Desai
DOI:10.1016/j.molcata.2016.11.020
日期:2017.1
Abstract A novel Ru(III) and Fe(III) complexes of ligands 1 and/or 2 where 1 = 2,2′-((1E,1′E)-((azanediylbis(ethane-2,1-diyl))bis(azanylylidene))bis(methanylylidene))diphenol and 2 = 2,2′-((1E,1′E)-((azanediylbis(ethane-2,1-diyl))bis(azanylylidene))bis(methanylylidene)) bis(4-nitrophenol)} have been synthesized as ‘neat’ and zeoliteY encapsulated complexes. These catalysts are characterized by various
摘要 配体 1 和/或 2 的新型 Ru(III) 和 Fe(III) 配合物 其中 1 = 2,2'-((1E,1'E)-((azanediylbis(ethane-2,1-diyl) )bis(azanylylidene))bis(methanylylidene))diphenol and 2 = 2,2'-((1E,1'E)-((azanediylbis(ethane-2,1-diyl))bis(azanylylidene))bis(methanylylidene) )) 双(4-硝基苯酚)} 已被合成为“纯”和沸石 Y 包封的复合物。这些催化剂通过各种分析工具进行表征,例如 FTIR、UV-vis、元素分析、ICP-AES、摩尔电导率、1 H-和 13 C NMR、TGA、SEM、AAS、BET、磁化率和粉末 XRD,以支持配合物的形成,不存在外围冗余配体和配合物,沸石 Y 形态和结晶度的保持,以及在不破坏沸石
Dioxomolybdenum(VI) complexes containing chiral oxazolines applied in alkenes epoxidation in ionic liquids: A highly diastereoselective catalyst
作者:José A. Brito、Sonia Ladeira、Emmanuelle Teuma、Beatriz Royo、Montserrat Gómez
DOI:10.1016/j.apcata.2011.03.024
日期:2011.5
dioxomolybdenum complexes, 2 and 3, containing the bis(oxazoline) B and the oxazolinyl-pyridine C respectively, have been prepared and fully characterized both in solution and solid state, including the single-crystal X-ray diffraction analysis for 2, which represents the first structure of a Mo(VI) complex coordinated to a bis(oxazoline). These complexes, together with the bimetallic system 1, were used
Carbocyclic construction by the [2,3]sigmatropic rearrangement of cyclic sulfonium ylides. a new entry for the stereoselective synthesis of substituted cyclohexanones
作者:Fusao Kido、Kazuo Yamaji、Subhash C. Sinha、Toshiya Abiko、Michiharu Kato
DOI:10.1016/0040-4020(95)00409-2
日期:1995.7
The rhodium(II)-catalyzed cyclization of acyclic α-diazo-β-keto esters 1c,d provided stereoselectively the highlysubstituted cyclohexanones 3c,d respectively, by the [2,3]sigmatropic rearrangement via stereocontrolled nine-membered allylsulfonium ylides 2c,d. Further elaboration of 3d toward the cyclohexanone 36 accomplished asymmetric formal syntheses of the representative elemanoids, 37 and 38.
Abstract Chemoenzymatic oxidations involving the CAL-B/H2O2 system was developed in a sugar derived Natural DeepEutecticSolvent (NaDES) composed by a mixture of glucose, fructose and sucrose. Good to excellent conversions of substrates like cyclooctene, limonene, oleic acid and stilbene to their corresponding epoxides, cyclohexanone to its corresponding lactone and 2-phenylacetophenone to its corresponding