Results 51 to 60 of about 68,150 (262)

Diastereo-divergent synthesis of chiral hindered ethers via a synergistic calcium(II)/gold(I) catalyzed cascade hydration/1,4-addition reaction

Nature Communications
Hindered ethers are ubiquitous in natural products and bioactive molecules. However, developing an efficient method for the stereocontrolled synthesis of all stereoisomers of chiral hindered ethers is highly desirable but challenging.
Xiangfeng Lin, Xia Mu, Hongqiang Cui, Qian Li, Zhaochi Feng, Yan Liu, Guohui Li, Can Li   +7 more
doaj   +1 more source

Analysis of the volatile compounds in Fuliji roast chicken during processing and storage based on GC-IMS

Current Research in Food Science, 2022
To investigate the flavor changes of Fuliji roast chicken during processing and storage, the volatile organic compounds (VOCs) during processing (fresh, fried, stewed and sterilized) and storage (1 month, 2 months and 4 months) were determined by gas ...
Hui Zhou, Wei Cui, Yafei Gao, Ping Li, Xinyuan Pu, Ying Wang, Zhaoming Wang, Baocai Xu   +7 more
doaj  

A TGA/FTIR and Mass Spectral Study on the Thermal Degradation of Bisphenol A Polycarbonate [PDF]

, 2004
The thermal degradation of polycarbonate under nitrogen was studied using TGA/FTIR, GC/MS and LC/MS as a function of mass loss. The gases evolved during degradation were inspected by in situ FTIR and then the evolved products were collected and analysed ...
Jang, Bok Nam, Wilkie, Charles A.
core   +2 more sources

Efficient Synthesis of a Range of 1-Hydroxy-2-(1-Alkyloxymethyl)-9,10-Anthraquinone Derivatives [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 1995
Five new 1-hydroxy-2-(1-alkyloxymethyl)-9,10-Anthraquinones (9a-e) have been prepared. Selective nitration of 2-methyl-9,10-anthraquinone, reduction to the corresponding amine, diazotization and treatment by sulfuric acid solution afforded the 1-hydroxy ...
Hashem Sharghi, Ali Forghaniha
doaj  

In-Solution Conformational Analysis of the XCYCH3 Moiety for Small Esters and Ethers with all Combinations of X, Y = O, S

Molecules, 2013
Favorable steric and electrostatic fit of a ligand to a receptor is of central interest in theoretical drug design. This paper considers the effects of non-protic solvents, in comparison with the gas phase, on the preferred conformation of the XCYCH3 ...
Peter I. Nagy
doaj   +1 more source

Experimental and modeling study of the autoignition of 1-hexene/iso-octane mixtures at low temperatures [PDF]

, 2005
Autoignition delay times have been measured in a rapid compression machine at Lille at temperatures after compression from 630 to 840 K, pressures from 8 to 14 bar, \Phi = 1 and for a iso octane/1 hexene mixture containing 82% iso-octane and 18% 1 hexene.
Barbé, Battin-Leclerc, Benson, Buda, Callahan, Ciajolo, Clarkson, Curran, Curran, F. Battin-Leclerc, Fieweger, G. Vanhove, Glaude, Glaude, Gray, Heyberger, Heyberger, Klotz, Lee, Minetti, Minetti, Minetti, Minetti, Muller, P.A. Glaude, R. Fournet, R. Minetti, S. Touchard, Stark, Touchard, Vanhove, Warth, Westbrook, Yahyaoui   +33 more
core   +3 more sources

PEG Branched Polymer for Functionalization of Nanomaterials with Ultralong Blood Circulation

, 2009
Nanomaterials have been actively pursued for biological and medical applications in recent years. Here, we report the synthesis of several new poly(ethylene glycol) grafted branched-polymers for functionalization of various nanomaterials including carbon
Adams M. L., Ashiuchi M., Bruchez M., Chan W. C. W., Chatterjee T., Chen R. J., Chen Z., Cheng Y., Cognet L., Dieckmann G. R., Dubertret B., Fan H. Y., Gao M. Y., Gerion D., Han G., Huff T. B., Ipe B. I., Jiang W., Kam N. W. S., Kam N. W. S., Kanaras A. G., Karajanagi S. S., Kogan M. J., Kryachko E. S., Lin Wang W. Z., Liu W. H., Liu Z., Liu Z., LizMarzan L. M., Markowitz M. A., Maubach G., Mulder W. J. M., Nakayama-Ratchford N., Nam J. M., Nath N., Numata M., Oyelere A. K., O’Connell M. J., Paciotti G. F., Parveen S., Pinaud F., Porta F., Richard C., Schultz S., Selvan S. T., Sinani V. A., Sinha N., Sohn B. H., Sonnichsen C., Thaxton C. S., Tong L., Wang D., Welsher K., Williams K. A., Xiaoming Sun Z. L., Yang S. T., Zhelev Z., Zheng M., Zheng M.   +58 more
core   +1 more source

Femtosecond β-cleavage dynamics: Observation of the diradical intermediate in the nonconcerted reactions of cyclic ethers [PDF]

, 1998
Femtosecond (fs) dynamics of reactions of cyclic ethers, symmetric and asymmetric structures, are reported. The diradical intermediates and their beta-cleavages, which involve simultaneous C-C, C-H sigma-bond breakage and C-O, C-C pi-bond formation, are ...
Diau, E. W.-G., Kim, Z. H., Scala, A. A., Zewail, A. H.   +3 more
core   +1 more source

High turnover in electro-oxidation of alcohols and ethers with a glassy carbon-supported phenanthroimidazole mediator. [PDF]

, 2017
Glassy carbon electrodes covalently modified with a phenanthroimidazole mediator promote electrochemical alcohol and ether oxidation: three orders of magnitude increase in TON, to ∼15 000 in each case, was observed compared with homogeneous mediated ...
Berben, Louise A, Francke, Robert, Johnson, Bruce M, Little, R Daniel   +3 more
core   +1 more source

Synthesis and Stereostructure-Activity Relationship of Novel Pyrethroids Possessing two Asymmetric Centers on a Cyclopropane Ring

Molecules, 2019
2-Methylcyclopropane pyrethroid insecticides bearing chiral cyanohydrin esters or chiral ethers and two asymmetric centers on the cyclopropane ring, were synthesized.
Takashi Taniguchi, Yasuaki Taketomo, Mizuki Moriyama, Noritada Matsuo, Yoo Tanabe   +4 more
doaj   +1 more source