Results 11 to 20 of about 320,740 (318)

Copper (II) bromide/NMO system for α-amination of esters in solvent-free condition [PDF]

, 2023
Copper (II) bromide/ N-methylmorpholine N-oxide promoted α-amination of esters in solvent-free condition is reported. The α-amino esters are precursors for α-amino acids. This method provides α-amino esters in 58-83% yields.
Kankanala Naveen, Kumar, Sharada Prasanna, Swain, V., Ravichandiran, Yaman, Chauhan, V. Ravichandiran, Sharada Prasanna Swain, Kankanala Naveen Kumar, Yaman Chauhan   +7 more
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Preparation of New 2,3-Diphenylpropenoic Acid Esters – Good Yields Even for the More Hindered Z Isomers [PDF]

, 2004
The potassium salt of E- and Z-2,3-diphenylpropenoic acids prepared in situ could be esterified efficiently in DMSO with the appropriate alkyl halides at room temperature.
Boros, László, Károly Felföldi, Pálinkó István, Felföldi, Károly, Pálinkó, István, István Pálinkó, Felföldi Károly, Károly Felföldi, Boros László, István Pálinkó, László Boros, László Boros   +11 more
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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 ...
Jack L.‐Y. Chen, Aggarwal, Varinder K., Chen, Jack L. -Y., Scott, Helen K., Christine L. Willis, Willis, Christine L., Helen K. Scott, Hesse, Matthew J., Matthew J. Hesse, Jack L.-Y. Chen, Varinder K. Aggarwal   +10 more
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Catalytic Deoxygenative Coupling of Aromatic Esters with Organophosphorus Compounds [PDF]

, 2020
We have developed a deoxygenative coupling of aromatic esters with diarylphosphine oxides/dialkyl phosphonates under palladium catalysis. In this reaction, aromatic esters can work as novel benzylation reagents to give the corresponding benzylic ...
Miki B., Kurosawa, Junichiro, Yamaguchi, Kei, Muto, Ryota, Isshiki   +3 more
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Organocatalytic Lewis base functionalisation of carboxylic acids, esters and anhydrides via C1-ammonium or azolium enolates [PDF]

, 2014
This tutorial review highlights the organocatalytic Lewis base functionalisation of carboxylic acids, esters and anhydrides via C1-ammonium/azolium enolates.
Morrill, Louis C., Smith, Andrew D., Morrill, Louis, Smith, Andrew D.; id_orcid   +3 more
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Decarbonylative Reductive Coupling of Aromatic Esters by Nickel and Palladium Catalyst [PDF]

, 2022
Ni or Pd-catalyzed decarbonylative reductive couplings of aromatic esters were developed. A range of (hetero)aromatic esters was applicable to these reductive homocoupling reactions.
Yunfei, Peng, Junichiro, Yamaguchi, Kei, Muto, Ryota, Isshiki, Ryota Isshiki, Kei Muto, Yunfei Peng, Junichiro Yamaguchi   +7 more
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Detectability of testosterone esters and estradiol benzoate in bovine hair and plasma following pour-on treatment [PDF]

, 2009
The abuse of synthetic esters of natural steroids such as testosterone and estradiol in cattle fattening and sports is hard to detect via routine urine testing. The esters are rapidly hydrolysed in vivo into substances which are also endogenously present
Blokland, M.H., Becker, C., C. Becker, Nielen, M.W.F., Lasaroms, J.J.P., I. Riedmaier, H. H. D. Meyer, Riedmaier, I., A. W. J. M. Nijrolder, Stolker, A.A.M., Meyer, H.H.D., M. J. Groot, J. J. P. Lasaroms, M. H. Blokland, Groot, M.J., Nijrolder, A.W.J.M., M. W. F. Nielen, A. A. M. Stolker   +17 more
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Esters and amides of 3-R-2,8-dioxo-7,8-dihydro2H-pyrrolo[1,2-a][1,2,4]­triazino[2,3-c]quinazolin-5a(6H)-carboxylic(-propanoic) acids: synthesis and biological activity

Журнал органічної та фармацевтичної хімії, 2020
It is known that carboxyl groups bonded to aryl or hetaryl moieties play a role of the “pharmacophore” fragment in most NSAID molecules. It should be mentioned that the carboxyl group may cause the appearance of toxic effects and is characterized by ...
Viktor V. Stavytskyi, Inna S. Nosulenko, Kostiantyn I. Kandybey, Oleksii Yu. Voskoboinik, Serhii I. Kovalenko   +4 more
doaj   +1 more source

Features of the synthesis of pentaerythritol esters and carboxylic acids of aliphatic isomeric structure

Тонкие химические технологии, 2022
Objectives. Due to their structures, pentaerythritol esters have a number of appealing properties such as high viscosity index when used as oils and excellent compatibility with polyvinyl chloride when used as plasticizers.
V. V. Emelyanov, E. L. Krasnykh, D. A. Fetisov, S. V. Levanova, V. A. Shakun   +4 more
doaj   +1 more source

Glucosylation of Sucrose Laurate with Cyclodextrin Glucanotransferase [PDF]

, 2007
Sucrose monolauroyl esters were found to serve as substrates for cyclodextrin glucanotransferase (CGTase)-catalyzed transglucosidation reactions, affording new sucrose esters that have an additional 1-3 glucose residues on the pyranose ring of the ...
Zhao, Haisuo, Okada, Katsuhide, Baba, Naomichi, Nakajima, Shuhei, Izumi, Minoru   +4 more
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