Results 1 to 10 of about 4,909 (228)
Asymmetric Mannich reaction of aromatic imines with malonates in the presence of multifunctional catalysts [PDF]
Beilstein Journal of Organic ChemistryVarious multifunctional enantiomerically pure organocatalysts were synthesized and screened in asymmetric Mannich reaction. The reaction of aromatic imines with malonates in the presence of amino acid-derived catalysts gave Mannich adducts in very high ...
Kadri Kriis +5 more
doaj +2 more sources
Malonates in Cyclocondensation Reactions
Molecules, 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.
Wolfgang Stadlbauer +2 more
exaly +3 more sources
One-Pot Assembly of 2‑Pyrones through Copper-Catalyzed Cyclization of Propargylamines with Malonates [PDF]
Precision ChemistryJunwei Li +4 more
doaj +2 more sources
Frontiers 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 +1 more source
Dimerization/Elimination of β-Styrylmalonates under Action of TiCl4
Molecules, 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 +1 more source
Melaminium hydrogen malonate [PDF]
Acta 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
Molbank, 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
A Three-Dimensional Dynamic Supramolecular "Sticky Fingers" Organic Framework. [PDF]
, 2019 Engineering high-recognition host-guest materials is a burgeoning area in basic and applied research. The challenge of exploring novel porous materials with advanced functionalities prompted us to develop dynamic crystalline structures promoted by soft ...
Costa, José Sánchez +8 more
core +4 more sources
Recent Advances in Asymmetric Organocatalyzed Conjugate Additions to Nitroalkenes [PDF]
, 2017 The asymmetric conjugate addition of carbon and heteroatom nucleophiles to nitroalkenes is a very interesting tool for the construction of highly functionalized synthetic building blocks.
Alonso, Diego A. +6 more
core +6 more sources
Effect of Microwaves in the Chiral Switching Asymmetric Michael Reaction
Molecules, 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