Results 1 to 10 of about 5,053 (210)

Synthesis of chiral malonates by α-alkylation of 2,2-diphenylethyl tert-butyl malonates via enantioselective phase-transfer catalysis [PDF]

open access: yesFrontiers in Chemistry, 2023
An efficient synthetic approach for chiral malonates was established via enantioselective phase transfer catalysis. The α-alkylation of 2,2-diphenylethyl tert-butyl α-methylmalonates with (S,S)-3,4,5-trifluorophenyl-NAS bromide as a phase-transfer ...
Zhibin Guo   +5 more
doaj   +2 more sources

Synthesis and Anti-TMV Activity of Dialkyl/dibenzyl 2-((6-Substituted-benzo[d]thiazol-2-ylamino)(benzofuran-2-yl)methyl) Malonates [PDF]

open access: goldMolecules, 2013
Starting from benzofuran-2-methanal, 6-substituted benzothiazole-2-amines and malonic esters, sixteen title compounds were designed and synthesized seeking to introduce anti-TMV activity.
Meichuan Li   +8 more
doaj   +2 more sources

Dimerization/Elimination of β-Styrylmalonates under Action of TiCl4 [PDF]

open access: yesMolecules, 2022
A new type of dimerization of dimethyl (β-styryl)malonates in the presence of TiCl4 accompanied by elimination of a methanol molecule was discovered.
D. D. Borisov   +4 more
doaj   +2 more sources

Melaminium hydrogen malonate [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2012
The melaminium (2,4,6-triamino-1,3,5-triazin-1-ium) cation in the title compound, C3H7N6+·C3H3O4−, is essentially planar, with a r.m.s. deviation of the non-H atoms of 0.0085 Å. Extensive hydrogen bonding of the types N—H...N and N—H...O between cations and cations and between cations and hydrogen malonate (2-carboxyethanoate) anions leads to the ...
Barbara Froschauer, Matthias Weil
openaire   +3 more sources

Diethyl 2-((aryl(alkyl)amino)methylene)malonates: Unreported Mycelial Growth Inhibitors against Fusarium oxysporum

open access: yesMolbank, 2023
This paper presents the discovery and development of antifungal agents against Fusarium oxysporum (Fox), a devastating plant pathogen. Diethyl 2-((arylamino)methylene)malonates (DAMMs) were formed as side-products during the synthesis of polysubstituted ...
Willy-Fernando Cely-Veloza   +2 more
doaj   +1 more source

Probing the Binding Requirements of Modified Nucleosides with the DNA Nuclease SNM1A

open access: yesMolecules, 2021
SNM1A is a nuclease that is implicated in DNA interstrand crosslink repair and, as such, its inhibition is of interest for overcoming resistance to chemotherapeutic crosslinking agents.
Eva-Maria Dürr, Joanna F. McGouran
doaj   +1 more source

Malonates in Cyclocondensation Reactions

open access: yesMolecules, 2001
The use of malonates such as diethyl malonates 9, (chlorocarbonyl)ketenes 15 and bis(2,4,6-trichlorophenyl) malonates 18 as reagents for cyclocondensation with 1,3-dinucleophiles to give six-membered heterocycles is described.
Thomas Kappe   +4 more
doaj   +1 more source

Effect of Microwaves in the Chiral Switching Asymmetric Michael Reaction

open access: yesMolecules, 2003
Highly enantioselective Michael reactions of malonates with cyclic enones are achieved in remarkably less time under microwave irradiation using newly developed heterobimetallic catalysts.
S. Velmathi, S. Narasimhan
doaj   +1 more source

Electrochemical Perspective on Hematite–Malonate Interactions

open access: yesColloids and Interfaces, 2021
Organic matter (OM) interactions with minerals are essential in OM preservation against decomposition in the environment. Here, by combining potentiometric and electrophoretic measurements, we probed the mode of coordination and the role of pH-dependent ...
Karolina Kędra   +6 more
doaj   +1 more source

The Allylic Alkylation of Ketone Enolates

open access: yesChemistryOpen, 2020
The palladium‐catalyzed allylic alkylation of non‐stabilized ketone enolates was thought for a long time to be not as efficient as the analogous reactions of stabilized enolates, e. g. of malonates and β‐ketoesters.
Dr. Lukas Junk, Prof. Dr. Uli Kazmaier
doaj   +1 more source

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