Results 21 to 30 of about 511,751 (312)

meso‐Ester Corroles

Chemistry – A European Journal, 2015
AbstractThe introduction of ester groups on the 5‐ and 15‐meso positions of corroles stabilizes them against oxidation and induces a redshift of their absorption and emission spectra. These effects are studied through the photophysical and electrochemical characterization of up to 16 different 5,15‐diester corroles, in which the third meso position is ...
Canard, Gabriel, Gao, Di, d'Aléo, Anthony, Giorgi, Michel, Dang, Florian-Xuan, Balaban, Teodor Silviu   +5 more
openaire   +3 more sources

An Overview of CRISPR-Based Technologies in Wine Yeasts to Improve Wine Flavor and Safety

Fermentation, 2021
Modern industrial winemaking is based on the use of specific starters of wine strains. Commercial wine strains present several advantages over natural isolates, and it is their use that guarantees the stability and reproducibility of industrial ...
Alice Vilela
doaj   +1 more source

Descriptors for terpene esters from chromatographic and partition measurements: Estimation of human odor detection thresholds [PDF]

, 2020
We have used gas chromatographic retention data together with other data to obtain Abraham descriptors for 30 terpene esters. These include the air-water partition coefficient, as log Kw, for which no experimental values are available for any terpene ...
Abraham, Michael H, Acree, William E, Jr., Cometto-Muniz, J. Enrique   +2 more
core  

Impact of Stabilization Method and Filtration Step on the Ester Profile of “Brandy de Jerez”

Applied Sciences, 2023
Brandy stabilization is an important step aimed at decanting the suspended organic and inorganic particles that may cause undesirable turbidity (cloudiness or haze) in brandies, affecting the physico-chemical stability, the organoleptic characteristics ...
José Manuel Muñoz-Redondo, Belén Puertas, Manuel José Valcárcel-Muñoz, Raquel Rodríguez-Solana, José Manuel Moreno-Rojas   +4 more
doaj   +1 more source

Highly Diastereo- and Enantioselective Allylboration of Aldehydes using alpha-Substituted Allyl/Crotyl Pinacol Boronic Esters via in Situ Generated Borinic Esters [PDF]

, 2013
Readily available, alpha-substituted allyl/crotyl pinacol boronic esters often give low E/Z selectivity (with Z favored) in reactions with aldehydes. We found that addition of nBuLi to the pinacol boronic ester followed by trapping of the alkoxide with ...
Althaus M., Andersen M. W., Batey R. A., Batey R. A., Beckmann E., Blais J., Brown H. C., Brown H. C., Brown H. C., Brown H. C., Bubnov Y. N., Carosi L., Carosi L., Chemler S. R., Chen M., Chen M., Christine L. Willis, Cmrecki V., Cole T. E., Denmark S. E., Fang G. Y., Flamme E. M., Gonzalez A. Z., Guzman-Martinez A., Hancock K. G., Helen K. Scott, Hesse M. J., Hoffmann R. W., Hoffmann R. W., Hoffmann R. W., Hoffmann R. W., Hoffmann R. W., Hoffmann R. W., Ito H., Jack L.-Y. Chen, Kennedy J. W. J., Kister J., Kliman L. T., Kramer G. W., Lachance H., Larouche-Gauthier R., Matteson D. S., Matthew J. Hesse, Midland M. M., Park J. K., Pelz N. F., Peng F., Peng F., Pietruszka J., Pietruszka J., Posseme F., Pulis A., Ramachandran P. V., Shiner C. S., Sonawane R. P., Stymiest J. L., Varinder K. Aggarwal, Webster M. P., Woodward A. R., Yamamoto Y., Zschage O.   +60 more
core   +2 more sources

1,4-diacetoxy-β-lactams. Reactions with nucleophiles [PDF]

, 1985
β-Lactam reacts with hetero nucleophiles under ring cleavage to give 2,2-dimethyl-3-oximinobutanoic esters 6 and 7 .
Elburg, P.A. van, Harkema, S., Hummel, G.J. van, Reinhoudt, D.N.   +3 more
core   +3 more sources

Cu/ZrO₂ Catalyst Modified with Y₂O₃ for Effective and Stable Dehydration of Glycerol to Acetol

Molecules
Glycerol is a main by-product of biodiesel production, and its further processing is essential for the biorefinery. In this paper, a highly active and stable catalyst for the catalytic dehydration of glycerol to acetol is obtained by modifying a Cu-Zr ...
Zhoubing Liang, Huan Li, Jianrong Xie, Songshou Ye, Jinbao Zheng, Nuowei Zhang   +5 more
doaj   +1 more source

CH2 Linkage Effects on the Reactivity of Bis(aminophosphine)–Ruthenium Complexes for Selective Hydrogenation of Esters into Alcohols

Scientific Reports, 2017
A novel ruthenium complex binding to two subtly different aminophosphine ligands, (o-PPh2C6H4CH2NH2)(o-PPh2C6H4NH2)RuCl2, was successfully isolated. This bis(aminophosphine)–ruthenium complex shows efficient activity in both dimethyl oxalate (DMO) and ...
Xiaolong Fang, Mingjun Sun, Jianwei Zheng, Bin Li, Linmin Ye, Xiaoping Wang, Zexing Cao, Hongping Zhu, Youzhu Yuan   +8 more
doaj   +1 more source

Scientific Opinion on Flavouring Group Evaluation 20, Revision 4 (FGE.20Rev4): Benzyl alcohols, benzaldehydes, a related acetal, benzoic acids, and related esters from chemical groups 23 and 30 [PDF]

EFSA Journal, 2012
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to evaluate 45 flavouring substances in the Flavouring Group Evaluation 20, Revision 4 (FGE.20Rev4), using the Procedure in ...
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

Promoting electrocatalytic CO2 reduction to formate via sulfur-boosting water activation on indium surfaces

Nature Communications, 2019
CO2 conversion to liquid fuels provides an appealing means to remove the greenhouse gas, although it is challenging to find materials that are both active and selective.
Wenchao Ma, Shunji Xie, Xia-Guang Zhang, Fanfei Sun, Jincan Kang, Zheng Jiang, Qinghong Zhang, De-Yin Wu, Ye Wang   +8 more
doaj   +1 more source