Results 1 to 10 of about 15,343 (225)
Isothiourea-Catalyzed Enantioselective Michael Addition of Malonates to α,β-Unsaturated Aryl Esters. [PDF]
Org Lett, 2022 An enantioselective Michael addition of malonates to α,β-unsaturated para-nitrophenyl esters was achieved using the Lewis basic isothiourea HyperBTM, giving excellent levels of product enantioselectivity (up to >99:1 enantiomeric ratio) in good yields ...
Wu J +6 more
europepmc +2 more sources
Ir-Catalyzed Asymmetric Allylic Alkylation of Dialkyl Malonates Enabling the Construction of Enantioenriched All-Carbon Quaternary Centers. [PDF]
J Am Chem Soc, 2022 An enantioselective iridium-catalyzed allylic alkylation of malonates with trisubstituted allylic electrophiles to form all-carbon quaternary stereocenters is reported.
Moghadam FA +5 more
europepmc +2 more sources
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 ...
Matthias Weil, Barbara Froschauer
openaire +4 more sources
Malonates in Cyclocondensation Reactions [PDF]
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. Further attempts to use malonates such as bis(trimethylsilyl) malonates 19 and bis(carbamimidoyl) malonates 29 as new ...
Wolfgang Stadlbauer +4 more
openaire +3 more sources
Chemical Science, 2020 A Pd-catalyzed dearomative three-component C–C bond formation of bromoarenes with diazo compounds and malonates was developed. Various bromoarenes ranging from benzenoids to azines and heteroles were transformed to the corresponding substituted alicyclic
Hiroki Kato +4 more
semanticscholar +1 more source
Reductive Arylation of Arylidene Malonates Using Photoredox Catalysis.
ACS Catalysis, 2019 A strategy with arylidene malonates provides access to β-umpolung single-electron species. Reported here is the utilization of these operators in intermolecular radical-radical arylations, while avoiding conjugate addition/dimerization reactivity that is
Rick C. Betori, K. Scheidt
semanticscholar +1 more source
Organic Letters, 2018 A cooperative Lewis acid/photocatalytic reduction of arylidene malonates yields a versatile radical anion species. This intermediate preferentially undergoes intermolecular radical-radical coupling reactions, and not the conjugate addition-dimerization ...
Benjamin R. McDonald, K. Scheidt
semanticscholar +1 more source
Enantioselective Ir-Catalyzed Allylic Alkylation of Racemic Allylic Alcohols with Malonates.
Organic Letters, 2019 Ir-catalyzed enantioselective allylic alkylation of branched racemic allylic alcohols with malonates is described. Enabled by Carreira's chiral Ir/(P, olefin) complex, the method described allows allylic substitution with various aromatic alcohols and ...
Chunna Meng +3 more
semanticscholar +1 more source
Chemical Science, 2019 A cooperative Lewis acid/photocatalytic reduction of salicylaldehyde-derived arylidene malonates provides access to a versatile, stabilized radical anion enolate.
Rick C. Betori +2 more
semanticscholar +1 more source