Promoted catalysts for hydrogenation of bicyclic aromatic hydrocarbons obtained in situ from molybdenum and tungsten carbonyls
作者:E. M. Zakharyan、M. I. Onishchenko、A. L. Maksimov
DOI:10.1134/s0965544118010164
日期:2018.1
Promoted Мo and W catalysts have been prepared in situ via thermaldecomposition of precursors, oil-soluble salts Mo(CO)6, W(CO)6, С°C16H30O4, and NiC16H30O4. TiO2, Al2O3, and ZrO(NO3)2 · 6H2O have been used as the acidic additives. Also, Mo and W unsupported sulfide catalysts have been prepared in the presence of elemental sulfur as the sulfiding agent. The catalysts have been characterized by transmission
已通过前体,油溶性盐Mo(CO)6,W(CO)6,С°C 16 H 30 O 4和NiC 16 H 30 O 4的热分解原位制备了增强型Мo和W催化剂。TiO 2,Al 2 O 3和ZrO(NO 3)2 ·6H 2O已被用作酸性添加剂。同样,已经在元素硫作为硫化剂的存在下制备了Mo和W无载体的硫化物催化剂。催化剂已经通过透射电子显微镜和X射线光电子能谱表征。在双环芳烃的加氢反应中,以10%萘溶液(未取代的萘,1-和2-甲基萘以及1,5-和2的模型混合物)为例,评估了原位制备的催化剂的活性。 3-二甲基萘)在ñ-十六烷。已经发现前体/酸性氧化物比率对所形成的催化剂的活性的影响。在2和5 MPa的氢气压力以及380和400°C的温度下进行了2 h的双环芳烃加氢反应。由于不存在空间位阻,未取代的芳环的氢化是优选的。根据反应温度,在反应条件下正十六烷的转化度为1.5-7.5%。已经发现,硫化催化剂
Characterization of new methyl-substituted tetralins and indans by13C NMR spectroscopy
作者:T. Laurens、F. Schmit-Quilès、D. Nicole
DOI:10.1002/mrc.1260330706
日期:1995.7
In order to perform the analysis of the components contained in fossil fuels, carbon assignments of new methylated derivatives of tetralin and indan were obtained. Their chemical shifts were calculated by applying additivity rules.
Synthesis of nickel–tungsten sulfide hydrodearomatization catalysts by the decomposition of oil-soluble precursors
作者:I. A. Sizova、A. B. Kulikov、M. I. Onishchenko、S. I. Serdyukov、A. L. Maksimov
DOI:10.1134/s0965544115080174
日期:2016.1
Nickel–tungsten sulfide catalysts for the hydrogenation of aromatic hydrocarbons have been prepared by the in situ decomposition of an oil-soluble tungsten hexacarbonyl precursor in a hydrocarbon feedstock using oil-soluble nickel salt nickel(II) 2-ethylhexanoate as a source of nickel. The in situ synthesized Ni–W–S catalyst has been characterized by X-ray photoelectron spectroscopy. The activity of
Substituted 1,2,3,4-tetrahydroaminonaphthols: antihypertensive agents, calcium channel blockers, and adrenergic receptor blockers with catecholamine-depleting effects
作者:Karnail S. Atwal、Brian C. O'Reilly、Eric P. Ruby、Chester F. Turk、Gunnar Aberg、Magdi M. Asaad、James L. Bergey、Suzanne Moreland、James R. Powell
DOI:10.1021/jm00387a008
日期:1987.4
Substituted 1,2,3,4-tetrahydroaminonaphthols were found to be calcium channel blockers with antihypertensive properties. These compounds also possessed adrenergic beta-receptor blocking activity. From the structure-activity studies, no clear correlation emerged between the in vitro calcium channel blocking activity and the acute anti-hypertensive activity in cannulated spontaneously hypertensive rats
A cis-1,2-diaminocyclohexane (cis-DACH) Ti salalen complex (R=NO2) was shown to efficiently catalyzeenantioselective benzylic hydroxylations with H2O2 as oxidant. Tetralin and indane derivatives are converted to benzylic alcohols with up to 98 % ee. The overoxidation to ketone is negligible. Epoxidation reactions are similarly effective, with 1-decene being converted to its epoxide in 90 % yield and
顺式-1,2-二氨基环己烷(顺式-DACH)Ti salalen络合物(R=NO 2)被证明可以有效催化以H 2 O 2作为氧化剂的对映选择性苄基羟基化。四氢化萘和茚满衍生物转化为 ee 高达 98% 的苯甲醇。酮的过度氧化可以忽略不计。环氧化反应同样有效,在 0.1 mol% 催化剂负载量下,1-癸烯转化为其环氧化物,产率达 90%,ee 达 94%。