CAS: 12035-98-2; Vanadium(Ii) Oxide

上下游产品

vanadium oxygen vanadium(V) oxychloride triethylstannanevanadium dioxide nickel vanadium(V) oxychloride vanadium

📜三氯一氧化钒 三氯代氧化钒(V) 以 Gaseous Matrix 用作溶剂,化学反应生成氧化钒
参考文献:Vo 的傅里叶变换光谱:A4π-X4σ− 系统中接近 10 500 å 的旋转结构
标题:Vo 的傅里叶变换光谱:A4π-X4σ− 系统中接近 10 500 å 的旋转结构
摘要:摘要 Vo 在近红外区域的 A4π-X4σ− 电子跃迁通过傅立叶变换光谱以多普勒限制分辨率记录,并对 1.05 μm 处的 (0,0) 波段和1.18 微米.发现 A4π 状态具有相对较小的自旋轨道耦合(a = 35.19 Cm-1),因此在观测到的最高 N 值(n = 90 附近)几乎完全不耦合到情况 (B).超精细结构由于51V 核( I = 7 2 )在 4 π 5 2-X 4 σ-子带和许多自旋卫星分支中很突出;在高 N 值下,只有主要分支 (δn = δj) 出现,线条很尖锐,表明超精细 B 参数(磁性超精细哈密顿量中的 I.s 系数)在 A4π 和 X4σ− 状态下相同.
Doi:10.1016/0022-2852(82)90110-2

专利信息

专利号:US-2014255263-A1
优先权日:2011-08-17
标题:Apparatus for the liquid-phase synthesis of isoprene from isobutylene and formaldehyde
发明人：DYKMAN ARKADII SAMUILOVICH; SIBAGATULLIN GAMIL GABDRAHMANOVICH; FEDORCOVA ELENA VLADIMIROVNA; FLEGONTOV ALEKSEI MICHAILOVICH
权利人:DYKMAN ARKADII SAMUILOVICH; SIBAGATULLIN GAMIL GABDRAHMANOVICH; FEDORCOVA ELENA VLADIMIROVNA; FLEGONTOV ALEKSEI MICHAILOVICH; OBSHESTVO S OGRANICHENNOI OTVETSTVENNOSTIU NP OB EUROCHIM
摘要:The apparatus for liquid-phase synthesis of isoprene from isobutylene and formaldehyde, comprising the following units of synthesis of isoprene precursors: 1,3-dioxanes synthesis unit; unit for TMC synthesis from isobutylene-containing fraction; unit for TMC synthesis from recycled concentrated isobutylene derived either from isoprene synthesis unit or from the unit for synthesis products separation and isoprene monomer isolation; isoprene synthesis unit; by-products decomposition unit; unit for synthesis products separation and isoprene monomer isolation. The apparatus is characterized with separation of by-product fractions from 1,3-dioxanes synthesis unit; with assignment of light fraction for sale or its supply for combined decomposition with the by-products (MDHP fraction), formed during separation of synthesis products and isolation of isoprene monomer; with assignment of heavy fraction for sale, at that TMC and 1,3-dioxanes that were formed in the corresponding units are simultaneously supplied for combined decomposition to isoprene synthesis unit while the unit for separation of synthesis products and isolation of isoprene monomer is directly connected with isoprene synthesis unit, by-products decomposition unit as well as with the unit for TMC synthesis from recycled concentrated isobutylene. The apparatus is also characterized by the following: 1,3-dioxanes synthesis unit includes by-products separation into light, medium and heavy fractions, from which the light fraction of by-products is fed for homogenous decomposition to isoprene synthesis unit and/or to by-products decomposition unit for combined decomposition with the by-products (MDHP fraction) formed during separation of synthesis products and isolation of isoprene monomer; the medium fraction of by-products is assigned for sale and/or mixed with the light fraction of by-products and supplied to by-products decomposition unit; and unreacted isobutylene from the unit of TMC synthesis from recycled concentrated isobutylene is supplied to the unit of TMC synthesis from isobutylene-containing fraction, being previously mixed.

专利号:WO-2013138200-A1
优先权日:2012-03-13
标 题 :Green chemistry synthesis of the malaria drug amodiaquine and analogs thereof
发明人：FORTUNAK JOSEPH MARIAN; KULKARNI AMOL ANANT; KING CHRISTOPHER
权利人:UNIV HOWARD
摘要:Methods are provided for a green chemistry one-pot synthesis of amodiaquine and amodiaquine analogs. The methods have a lower environmental impact, lower investment cost, reduced amounts of byproducts and impurities, and a shorter synthesis time, compared to current conventional synthesis methods. The methods reduce the total number of steps in the synthesis from four to five down to two, thereby simplifying production; and allow a reduced number of solvents and reagents to be used in production, thereby reducing the waste generated in the synthesis. The methods can reduce the waste to about 3-5 kilograms of waste generated per kilogram of product produced; and surprisingly improve the overall yield from 60-65% to greater than 90% as compared to the current conventional synthesis methods for amodiaquine and its analogs.

专利号:WO-2009082260-A1
优先权日:2007-12-21
标 题 :Plant for the liquid phase synthesis of isoprene from isobutylene and formaldehyde
发明人：BUSYGIN VLADIMIR MIKHAILOVICH; DYKMAN ARKADIY SAMUILOVICH; GILMANOV KHAMIT KHAMISOVICH; POLYAKOV SERGEY ALEKSANDROVICH; FLEGONTOV ALEKSEY MICHAYLOVICH; FEDORCOVA ELENA VLADIMIROVNA
权利人:OBSHESTVO O OGRANICHENNOI OTVE
摘要:The invention relates to a plant for the synthesis of isoprene in a liquid phase from isobutylene and formaldehyde or from the source substances thereof. The inventive plant consists of a dimethyl dioxane synthesis unit detached from two parallel operating trimethyl carbinol synthesis units, and the trimethyl carbinol and dimethyl dioxane produced therein are simultaneously supplied for common decomposition to an isoprene synthesis unit. Light by-products extracted in a unit for rectifying high-boiling by-products, which unit is located downstream of the dimethyl dioxane synthesis unit, are supplied either to sales or to decomposition together with by-products (methyl-dihydropyrane fraction ) which are produced during end-products separation and isoprene monomer extraction, or to sales and to a decomposition unit for decomposition together with the above-mentioned by-products (methyl-dihydropirane fraction), afterwards to the end-product separation and isoprene monomer extraction unit. The end-product separation and isoprene monomer extraction unit is directly connected to the soprene synthesis unit, the decomposition unit and to the dimethyl dioxane synthesis unit. Said plant makes it possible to reduce the accumulation of high-boiling by-products, to decrese the production costs and to improve the engineering-and-economical performances of the process.

专利号:US-5220016-A
优先权日:1991-07-29
标 题:Synthesis of navelbine analogs
发明人：MAGNUS PHILIP D; THURSTON LEE S
权利人:UNIV TEXAS
摘要:The invention is a de novo synthesis of the norcatharanthine moiety of navelbine. The synthesis includes condensing a Grignard reagent prepared from an amine-protected R(+)-piperidinyl methanol with an N-protected 2-methoxyoxalyl indole. The indole N-protecting group is removed to provide a 2-methoxyindole hydroxy ester which is coupled to vindoline. After removal of the amineprotecting group from the piperidinyl group, ring closure to the indole moiety provides dihydrodesethyl navelbine. Other derivatives and analogs of navelbine with potential clinical applications in cancer chemotherapy may be readily synthesized. The synthesis opens a route to a wide variety of navelbine modifications, including modifications at or near the tryptamine bridge.

专利号:US-5986146-A
优先权日:1995-04-11
标题:Process and reactor for heterogeneous exothermic synthesis of formaldehyde
发明人：SIOLI GIANCARLO
权利人:FLORIALL HOLDINGS LTD
摘要:PCT No. PCT/EP96/01517 Sec. 371 Date Dec. 5, 1997 Sec. 102(e) Date Dec. 5, 1997 PCT Filed Apr. 9, 1996 PCT Pub. No. WO96/32190 PCT Pub. Date Oct. 17, 1996A process for the heterogeneous exothermic synthesis of formaldehyde, in particular in a reactor of the type comprising a plurality of adiabatic catalytic beds connected in series, provides the step of feeding to the reactor the methanol necessary for the synthesis distributed in at least two portions, each fed to respective distinct catalytic beds.

专利号:WO-2012047907-A9
优先权日:2010-10-04
标题 :Synthesis of c5-substituted tetracyclines, uses thereof, and intermediates thereto
发明人：MYERS ANDREW G; WRIGHT PETER M; HECKER EVAN
权利人:HARVARD COLLEGE; MYERS ANDREW G; WRIGHT PETER M; HECKER EVAN
摘要:The tetracycline class of antibiotics has played a major role in the treatment of infectious diseases for the past 50 years. However, the increased use of the tetracyclines in human and veterinary medicine has led to resistance among many organisms previously susceptible to tetracycline antibiotics. The recent development of a modular synthesis of tetracycline analogs through a chiral enone intermediate has allowed for the efficient synthesis of novel tetracycline analogs never prepared before. The present invention provides more efficient routes for preparing the enone intermediate and allows for a wide variety of substituents at position 5 of the tetracycline ring system.