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Rapid Access to Oxabicyclo[2.2.2 ]octane Skeleton through Cu(I)- Catalyzed Generation and Trapping of Vinyl-o-quinodimethanes (Vinyl-0-QDMs)

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Chinese Journal of Chemistry 2020年第10期38卷 1052-1056页

作者： Hejiang Luo Chuan He Huanfeng Jiang Shifa Zhu Key Laboratory of Functional Moleculor Engineering of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhouGuangzhou 510640China

Summary of main observation and conclusion A Cu(I)-catalyzed three-component reaction of terminal enynals/enynones,diazo compounds,and al kenes has been *** this method,a series of oxabicyclo[2.2.2]octanes were effectively synthesized in high yields under mild reaction *** transformation is proposed to proceed through trapping of the cyclic vinyl-o-quinodimethanes(vinyI-o-QDMs)species,which were generated from terminal enynals/enynones and diazo compounds by *** obvious advantages of wide substrate scopes,mild reaction conditions,and high seteroselectivity and atom eficiency make this reaction highly appealing for construction of highly rigid[2.2.2]octane skeleton.

关键词： octane ethane skeleton

ASYMMETRIC SYNTHESIS OF THE DERIVATIVES OF (+)-1R,3R(3S), 5S-2,4,3-DIAZAPHOSPHABICYCLO [3.2.1] octane

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Science China Chemistry 1992年第2期35卷 146-154页

作者：陈茹玉刘立建 Institute of Elemento-Organic Chemistry Nankai University Tianjin 300071 PRC

A new series of dextrorotatory derivatives of 1R,3RS,5S-1,8,8-trimethyl-2,4,3-diazaphosphabicyclo [3.2.1] octane with a newly formed chiral phosphorus atom has been prepared by an asymmetric reaction of (+)-cis-1R,3S-1,2,2-trimethyl-1,3-cyclopentadiamine with some thiophosphoryl dichlorides. The optically active products consisted of two unequal amounts of diastereomers,(1R, 3R, 5S) isomers and(1R, 3S, 5S) isomers. Two regioselective reactions took place when phenoxy thiophosphoryl dichloride and N,N-dialkylamino thiophosphoryl dichlorides were chosen as the reagents for the reaction. The content of (1R, 3R, 5S) isomers in the product was over 90% for the former and there were only (1R, 3S, 5S) isomers obtained for the latter.

关键词： 2 4 3-diazaphosphabicyclo [3.2.1] octane asymmetric synthesis chiral phosphorus atom diastereomer.

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A Selective octane-Enhancing FCC Catalyst Using ZRP Zeolite as an Active Component

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China Petroleum Processing & Petrochemical Technology 2001年第3期3卷 49-52页

作者： Huang Dayang Shu Xingtian He Mingyuan Yang Xiaoming Wang Dianzhong Zong Baoning SINOPEC Changling Petrochemical Co. Ltd Yueyang 414012 Research Institute of Petroleum Processing Beijing 100083 Research Institute of Petroleum Processing Beijing 100083 Research Institute of Petroleum Processing Beijing 100083 Research Institute of Petroleum Processing Beijing 100083 Research Institute of Petroleum Processing Beijing 100083

A hetero-crystalline seeding method to prepare a unique MFI type zeolite with mesopores of ca. 4 nm diameter designated as the ZRP zeolite, which possesses high stability and selectivity and is used as component of FCC catalysts to produce high-octane gasoline and light olefins, was developed. With the DOCR and DOCP catalysts containing the ZRP zeolite modified by phosphorus-incorporation as the octaneenhancing catalysts, the commercial trial was carried out in a 0.8Mt/a RFCC unit with a feedstock composed of Daqing atmospheric residue. As compared to the base catalyst, the LPG+gasoline+LCO product yield obtained from this catalyst was increased by 0.53m%. Meanwhile, the RON and MON of gasoline was increased by 1.4 and 2.4 units, respectively. The higher increment of MON is attributable to the higher isoparaffines content in gasoline. This result indicates that the ZRP zeolite possesses higher isomerization selectivity.

关键词： zeolite dealumination octane number octane-enhancing catalyst

ISOBARIC VAPOR-LIQUID EQUILIBRIUMS OF octane-ETHYL ACETATE AND octane-ISOPROPYL ACETATE SYSTEMS

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Chinese Journal of Chemical Engineering 1995年第3期3卷 59-65页

作者：陈钟秀胡望明浙江大学化工系浙江杭州 310027 浙江大学化工系浙江杭州

The isobaric vapor-liquid equilibrium data of systems of ethyl acetate（1）-n-octane（2） andisopropyl acetate（1）-n-octane（2） were determined at 0.0709 MPa and 0.1013 MPa by using a modifiedRose-Williams *** experimental data were tested for thermodynamical consistency and correlatedsatisfactorily with p-T equation of state and Wilson equation.

关键词： octane ethyl acetate isopropyl acetate vapor- liquid equilibrium thermodynamic consistency p-T equation Wilson equation

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CRYSTAL AND MOLECULAR STRUCTURES OF THE DERIVA-TIVES OF ( + )- 1K, 3K(S) , 5S-2,4,3-DIAZAPHOSPHABICYCLO-[3. 2. 1]octane

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Chinese Journal of Structural Chemistry 1992年第2期 81-84页

作者： Liu Li-Jian Chen Ru-YuInstitute of Elemento-Organic Chemistry , Nankai University , Tianjin 300071Wang Hong-Gen Yao Xin-KanCentre of Measurement and Computation, Nankai University , Tianjin 300071

Compound C9H19N2OPS (1) , Mr = 234. 3, monoclinic, space group P21, a = 7. 5637(2), b = 7. 704(2), c=10. 258(1) (?) ,β = 98. 66(2)°, V = 590. 9(?)3, Z =2, Dc=1. 317g/cm3, F(000) = 252. The final R = 0. 063 and Rw = 0. 080 with unit weight for 870 observed reflections (I≥3σ(I)). Compound C10H22 N3PS(2), Mr = 247. 34, monoclinic, space group P21, a = 7. 656(1), b = 8. 248 (1), c=10.750(l)(?), β=91.31(1)°, 7 = 678.73(?)3, Z = 2, Dc=1. 21g/cm3, final R = 0. 066 and Rw = 0. 081 with unit weight for 813 observed reflections (I≥3σ (I)), F(000) = 268. Both skeletons of (1) and (2) have similar geometry, which is composed of three rings : a seven-membered ring in a boat form, a six-membered ring in a chair conformation, and a five-membered ring in envelope form. The configura-tions of the chiral phosphorus atoms are assigned as 3R for (1) and as 3S for (2).

关键词： CRYSTAL AND MOLECULAR STRUCTURES OF THE DERIVA-TIVES OF DIAZAPHOSPHABICYCLO octane

LSSVM Combined with SPA Applied to Near-Infrared Quantitative Determination of the octane in Fuel Petrol Samples

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Open Journal of Applied Sciences 2018年第9期8卷 422-430页

作者： Lili Xu Jie Gu Huazhou Chen Jiangbei Wen Gaili Xu Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation (Qinzhou University) Qinzhou China College of Science Guilin University of Technology Guilin China Guangdong Spectrastar Instruments Co. Ltd. Guangzhou China

Least square support vector machine (LSSVM) combined with successive projection algorithm (SPA) method was applied for?near-infrared (NIR)?quantitative determination of the octane number in fuel petrol. The NIR spectra of 87 fuel petrol samples were?scanned?for model establishment and optimization. First order derivative Savitzky-Golay smoother?(1st-d’SG) was?utilized to improve the?NIR predictive ability. Its pretreatment effect was compared with the raw data.?SPA was?applied for the extraction of informative wavelengths. Considering the linear and non-linear?training mechanism,?LSSVM?regression was employed to establish calibration models.?The correlation coefficient (R) and root mean square error (RMSE) were used as the model evaluation indices;accordingly the octane number in fuel petrol?was quantitatively determined with the prospective predictive indices. Results showed that?after pretreated by 1st-d’SG, 8 SPA-selected wavelengths?was generated as the inputs of LSSVM, so that the calibration models were optimized in the way of combining the SPA-LSSVM regression with the SG smoother.?The prediction results were quite satisfactory, with the calibrating correlation coefficient of?0.951 and the RMSE?of 3.282. An independent?testing?sample set was used to evaluate the optimal model, the testing?correlation coefficient?was 0.903 and the RMSE was 4.128. We conclude that?NIR spectrometry is feasible to determine the octane in fuel petrol?by establishing SPA-LSSVM?models. The 1st-d’SG pretreatment has?the?advantage of selecting wavelengths containing the implicit information. The combination of 1st-d’SG pretreatment and SPA-LSSVM show its applicable potential to predict the?octane number?in?fuel petrol.

关键词： Near-Infrared Fuel Petrol The octane Number SPA LSSVM

Synthesis and Study of Anti Parkinsonism activity of 8-azabicyclo [3.2.1] octane Analogs

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Pharmacology & Pharmacy 2011年第2期2卷 94-99页

作者： Saurav M. Verma Department of Pharmaceutical Sciences Birla Institute of Technology Mesra. Ranchi India

Parkinson's disease (PD) is a common neurodegenerative condition associated with the degeneration of dopaminergic neurons in the zona compacta of the substantia nigra. 3D QSAR study of 8-azabicyclo [3.2.1] octane analogs which serves as the pathfinder for the design of novel molecule for anti Parkinsonism. Five compounds of 8-azabicyclo [3.2.1] octane analogs are synthesized and the anti Parkinsonism activity and brain dopamine level were studied on albino mice. The anti Parkinsonian activity was determined by the effect of test compound A-F on drug induced catatonia using the method of Morpurgo. Atropine as well as compounds B and E significantly reduced the catatonic responses and tremors induced by chlorpromazine. The level of dopamine was measured after the administration of atropine and the test compounds in brain of mice. The study reveals that the compounds B and E have exhibited significant activity over atropine.

关键词： 8-azabicyclo [3.2.1] octane Parkinsonism Dopamine Catatonia

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先进结构双处理器台式工作站octane

中国图象图形学报 1997年第4期2卷 55-56页

作者：明欣

先进结构双处理器台式工作站ＯＣＴＡＮＥ摆脱传统总线的工作方式ＯＣＴＡＮＥ是ＳＧＩ在１９９７年最新推出的台式工作站。它采用１个或２个处理器以及先进的体系结构来克服传统总线结构中的瓶颈，并提供必要的宽带来保证交互。由于采... 详细信息

先进结构双处理器台式工作站ＯＣＴＡＮＥ摆脱传统总线的工作方式ＯＣＴＡＮＥ是ＳＧＩ在１９９７年最新推出的台式工作站。它采用１个或２个处理器以及先进的体系结构来克服传统总线结构中的瓶颈，并提供必要的宽带来保证交互。由于采用独特的带宽管理技术，用户可以平滑...

关键词：双处理器台式工作站 octane

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SGI O2、octane换“芯”

中国经济和信息化 1998年第25期 27-27页

作者：王

SGI日前宣布,O2及octane工作站将采用新的250MHz MIPS R10000处理器,性能将提高30％。此外,SGI还将在octane系列的所有产品中,采用高性能的E系列图形卡。在此之前,250MHz MIPS R10000处理器仅装备高性能的octane工作站及Onyx2超级图形... 详细信息

SGI日前宣布,O2及octane工作站将采用新的250MHz MIPS R10000处理器,性能将提高30％。此外,SGI还将在octane系列的所有产品中,采用高性能的E系列图形卡。在此之前,250MHz MIPS R10000处理器仅装备高性能的octane工作站及Onyx2超级图形工作站。在价格低廉的O2工作站中采用这一型号的处理器,标志着O2产品系列,将在CPU决策及图形性能方面比前期型号提高30％。

关键词：图形卡高性能图形性能 SGI O2 octane