Shaoxing, China
Shaoxing, China

Shaoxing University is located in Shaoxing, Zhejiang, China. Wikipedia.

Time filter

Source Type

Shaoxing University and ZheJiang Medicine Co. | Date: 2013-01-16

The invention discloses an intermediate 1-methoxyl-2, 6, 10-trimethyl-1, 3, 5, 9-undec-tetraene, and a preparation method and uses thereof. In the synthesis method for the current lycopene intermediate 2-pos double bond C-14 aldehyde (2, 6, 10-trimethyl-2, 5, 9-undecatriene-1-aldehyde), expensive methyl iodide, polluting dimethyl sulphide and dangerous strong base are needed, so that the method is hardly applied to industrial production. The invention provides a new compound 1-methoxyl-2, 6, 10-trimethyl-1, 3, 5, 9-undec-tetraene, and pure 2-pos double bond C-14 aldehyde can be prepared by hydrolyzing and refining the compound. The synthetic route is simplified and the great suitability for industrial production is achieved.

Shaoxing University and Zhejiang Medicine Co. | Date: 2013-04-10

The present invention relates to an intermediate (12) of lycopene of 2,6,10-trimethyl-1,1-dialkoxyl-3,5,9-undecantriene of formula,(12) and its intermediate of 4-methyl- 5,5-dialkoxyl-1-pentenyl-1-phosphonic acid dialkyl ester of formula (10), and their preparation methods. The process route is simple, the starting materials are available easily, the cost is low, and it is valuable in industry.

The invention relates to a novel important lycopene intermediate 3, 7, 11-trimethyl-1, 3, 6, 10-tetraene-dodecyl diethyl phosphonate. A current lycopene intermediate 2, 4, 6, 10-tetra-double bond pentadec-carbon phosphonate is difficult to synthesize. The invention provides a novel intermediate, which has the following synthesis steps of: preparing 2, 6, 10-trimethyl-3, 5, 9-undecane triene-1-aldehyde from pseudoionone; preparing 2, 6, 10-trimethyl-2, 5, 9-undecane triene-1-aldehyde from the 2, 6, 10-trimethyl-3, 5, 9-undecane triene-1-aldehyde; and subjecting the 2, 6, 10-trimethyl-2, 5, 9-undecane triene-1-aldehyde and tetraethyl methylenediphosphonate to condensation reaction to obtain target product. The invention can generate novel intermediate from raw material pseudoionone only by four reactions, thus the reactions are easy to control and great industrial value are achieved.

Shaoxing University and Zhejiang Medicine Co. | Date: 2013-04-10

The present invention relates to 2,6,10-trimethyl-3,5,9-undecatrienyl- 1-aldehyde represented by formula (3), and a method for preparing this intermediate. The process route of the present invention is simple, the starting materials are available easily, and the cost is low.

Densities and viscosities of (n-butylammonium acetate (N4AC) protic ionic liquid + water) and (n-butylammonium nitrate (N4NO3) protic ionic liquid + water) mixtures were measured at T = (293.15, 298.15, 303.15, 308.15, and 313.15) K under atmospheric pressure. Electrical conductivities of the above-mentioned systems were determined at 298.15 K. Excess molar volumes and viscosity deviations were obtained from the experimental results and fitted to the Redlich-Kister equation with satisfactory results. Other volumetric properties, such as apparent molar volumes, partial molar volumes, and excess partial molar volumes were also calculated. The concentration dependence of electrical conductivity was fitted according to the empirical Casteel-Amis equation. Based on the measured and derived properties, the molecular interactions and structural factors in the above-mentioned systems were discussed. © 2013 Elsevier Ltd. All rights reserved.

Ye J.,Shaoxing University
Journal of Intelligent and Fuzzy Systems | Year: 2014

An interval neutrosophic set is an instance of a neutrosophic set, which can be used in real scientific and engineering applications. In the paper, the Hamming and Euclidean distances between interval neutrosophic sets (INSs) are defined and the similarity measures between INSs are proposed based on the relationship between similarity measures and distances. In the applications of the similarity measures, a multicriteria decision-making method is established in interval neutrosophic setting, in which criterion values with respect to alternatives are evaluated by the form of interval neutrosophic values (INVs) and the criterion weights are known information. We utilize the similarity measures between each alternative and the ideal alternative to rank the alternatives and to determine the best one. Finally, an illustrative example demonstrates the applications of the proposed decision-making method. © 2014 IOS Press and the authors.

Zhao B.,Shaoxing University
Organic and Biomolecular Chemistry | Year: 2012

New transition metal-catalyzed methods for the arylation of indolizines by the direct cleavage of C-H bonds have been developed. A wide range of aryltrifluoroborate salts react with indolizines in the presence of Pd(OAc) 2 catalyst and AgOAc oxidant to give the arylated indolizines in high yields. Both electron-donating and electron-withdrawing groups perform smoothly while bromide and chlorine substituents are tolerated. In addition, the indolizines display similar reactivities in the Pd-catalyzed reaction with 3-phenylpropiolic acid to afford the corresponding C-3 alkynylated indolizines. These methods allow the direct functionalization of indolizines in one step. This journal is © 2012 The Royal Society of Chemistry.

The one-step synthesis of biodiesel from waste oil with high FFAs (free fatty acids) content was developed under mild condition (70°C, 1atm) using novel acidic ionic liquid immobilization on PDVB (poly divinylbenzene) as catalyst. The solid acid owns high activities for both the esterification of FFAs and transesterification of triglyceride with total yield over 99.0%. The novel solid acid combined the high activities of acidic ionic liquids and the easy separation of solid catalysts. The mild reaction conditions, high catalytic activities, high total yield, reusability and high stability were the key properties of the novel methodology, which would greatly reduce the production cost for the industrial application. © 2013 Elsevier Ltd.

Ma H.,Shaoxing University
Information Sciences | Year: 2010

Motivated by the migration mechanisms of ecosystems, various extensions to biogeography-based optimization (BBO) are proposed here. As a global optimization method, BBO is an original algorithm based on the mathematical model of organism distribution in biological systems. BBO is an evolutionary process that achieves information sharing by biogeography-based migration operators. In BBO, habitats represent candidate problem solutions, and species migration represents the sharing of features between candidate solutions according to the fitness of the habitats. This paper generalizes equilibrium species count results in biogeography theory, explores the behavior of six different migration models in BBO, and investigates performance through 23 benchmark functions with a wide range of dimensions and diverse complexities. The performance study shows that sinusoidal migration curves provide the best performance among the six different models that we explored. In addition, comparison with other biology-based optimization algorithms is investigated, and the influence of the population size, problem dimension, mutation rate, and maximum migration rate of BBO are also studied. © 2010 Elsevier Inc. All rights reserved.

Liang X.,Shaoxing University
Industrial and Engineering Chemistry Research | Year: 2013

A novel solid acidic ionic liquid polymer (PIL) has been synthesized through the copolymerization of acidic ionic liquid oligomers with divinylbenzene (DVB). An efficient procedure for biodiesel synthesis from waste oils with a high free fatty acid (FFA) content was developed. PIL could efficiently catalyze both the transesterification of triglycerides and the esterification of FFAs with a total yield of >99.0%. The catalytic activities were quite high, with just one step to complete the reactions simultaneously under very mild conditions. The high activities are due to the high hydrophobic surface area, high acidity, and high stability of PIL. © 2013 American Chemical Society.

Loading Shaoxing University collaborators
Loading Shaoxing University collaborators