Results 1 to 10 of about 2,480,939 (303)

Catalytic, enatioselective Michael addition reactions [PDF]

ARKIVOC, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
S. C. Jha, N. N. Joshi
doaj   +2 more sources

Enantioselective Organocatalyzed Michael Addition of Isobutyraldehyde to Maleimides in Aqueous Media [PDF]

Molecules, 2022
Thiourea was introduced into (R,R)-1,2-diphenylethylenediamine as an organocatalyst to promote the reaction between isobutyraldehydes and maleimides. Enantioselective Michael addition reaction was carried out as an eco-friendly method using water as the ...
Jae Ho Shim, Seok Hyun Cheun, Hyeon Soo Kim, Deok-Chan Ha   +3 more
doaj   +2 more sources

Reaction of Chalcones with Cellular Thiols. The Effect of the 4-Substitution of Chalcones and Protonation State of the Thiols on the Addition Process. Diastereoselective Thiol Addition

Molecules, 2021
Several biological effects of chalcones have been reported to be associated with their thiol reactivity. In vivo, the reactions can result in the formation of small-molecule or protein thiol adducts.
Fatemeh Kenari, Szilárd Molnár, Pál Perjési   +2 more
doaj   +1 more source

Evidence of Isomerization in the Michael-Type Thiol-Maleimide Addition: Click Reaction between L-Cysteine and 6-Maleimidehexanoic Acid

Molecules, 2022
The reaction between L-cysteine (Cys) and 6-maleimidohexanoic acid (Mhx) in an aqueous medium at different levels of pH was analyzed via RP-HPLC, finding the presence of two reaction products throughout the evaluated pH range.
Víctor Alfonso Niño-Ramírez, Diego Sebastián Insuasty-Cepeda, Zuly Jenny Rivera-Monroy, Mauricio Maldonado   +3 more
doaj   +1 more source

Facile Synthesis of 3-Substituted Thiazolo[2,3-α]tetrahydroisoquinolines

Molecules, 2021
It was found that 4-hydroxy-2-butenoic ester (11) could not react with 3,4-dihydro-isoquinoline (4a). Individual addition reactions of γ-mercapto-α,β-unsaturated esters (18) and -unsaturated amide (19) with 3,4-dihydroisoquinolines (4) were carried out ...
Sheng-Han Huang, Wan-Yu Huang, Guo-Lun Zhang, Te-Fang Yang   +3 more
doaj   +1 more source

(1S,5R)-6,6-Dimethyl-4-(((1S,2S,5S)-2,6,6-trimethyl-4-oxobicyclo[3.1.1]heptan-2-yl)methyl)bicyclo[3.1.1]hept-3-en-2-one

Molbank, 2022
A simple and convenient procedure for the γ, β-dimerization of verbenone was developed. The dimer was obtained during aging with KOH without a solvent. The process proceeds as the formation of the extended enolate of verbenone and its Michael addition to
Oleg V. Ardashov, Dina V. Korchagina, Irina Yu. Bagryanskaya, Konstantin P. Volcho, Nariman F. Salakhutdinov   +4 more
doaj   +1 more source

Synthesis and Identification of some (pyrazole, pyridine-2-one, indazole and isoquinol-3-one) Compounds which derived from Chalcone and Evaluation of their Antibacterial [PDF]

Kirkuk Journal of Science, 2018
In this study, some of (pyrazole, pyridine-2-one, indazole and isoquinol-3-one), compounds have been prepared which derived from the chalcone compounds. The chalcone compounds have been prepared by reaction of cyclohexanone with substituted benzaldehyde (
Saad Jasim, Mohammed AbdulKareem, Mohammed Ghazei   +2 more
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DBU Promoted Polysubstituted Arene Formation via a Michael Addition/Cyclization/Elimination Cascade Reaction

Molecules, 2022
The straightforward construction of polysubstituted arenes is essential in both synthetic chemistry and medicinal chemistry. Herein, we reported a DBU promoted Michael addition/cyclization/elimination cascade reaction between vinylogous malononitrile ...
Guishun Bai, Yang Yang, Xingyue Wang, Jiamin Wu, Hong Wang, Xinyi Ye, Xiaoze Bao   +6 more
doaj   +1 more source

A new class of phtalimido-quinones sinthesys

Orbital: The Electronic Journal of Chemistry, 2012
Four new Michael adducts from the reaction between 1,4-naphthoquinone and 2,3-dibromo-1,4-naphthoquinone with w-amino-N-alkylphthalamide derivatives were presented in this work (Scheme 1).
Jeziane S. Alves, Josinete A. Paz, Celso A. Camara   +2 more
doaj   +1 more source

Organocatalytic Asymmetric Deconjugative Michael Additions. [PDF]

ChemInform, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Bell, Mark, Frisch, Kim, Jørgensen, Karl Anker   +2 more
openaire   +3 more sources