Results 31 to 40 of about 18,744 (300)

Enantioselective isothiourea catalysed Michael-Michael-lactonisation cascade; synthesis of δ-lactones and 1,2,3,4-substituted cyclopentanes [PDF]

, 2017
The authors thank the EPSRC (ERTR – grant code EP/J500549/1; ABF - grant code EP/J018139/1), the Spanish government for a FPU Fellowship and the University of Seville (V Plan Propio de Investigación) for financial support (PER).
Elías-Rodríguez, Pilar, Frost, Aileen B., Robinson, Emily R. T., Smith, Andrew D.   +3 more
core   +1 more source

Oxidation of Aryl Alcohols by Morpholinium Fluorochromate(VI) on Silica Gel, a Selective and Efficient Heterogeneous Reagent

E-Journal of Chemistry, 2011
Morpholinium fluorochromate(VI), MFC, is easily synthesized by reacting morpholine to an aqueous solution of CrO3 and HF. This reagent selectively oxidizes aryl alcohols to their corresponding aldehydes and ketones under mild conditions.
S. Zahra Sayyed-Alangi, H. Sajjadi-Ghotbabadi, Mohammed T. Baei, Sahar Naderi   +3 more
doaj   +1 more source

SYNTHESIS, CHARACTERIZATION AND THERMAL BEHAVIOUR OF HEAVY TRIVALENT LANTHANIDE MALONATES

Eclética Química, 2018
Solid-state Ln-L compounds, where Ln stands for heavy trivalent lanthanides (Tb-Lu) and L is malonate, have been synthesized. Simultaneous thermogravimetry and differential thermal analysis (TG-DTA), differential scanning calorimetry (DSC), X-ray powder ...
José Roberto Locatelli, Cláudio Teodoro de Carvalho, Flávio Junior Caires, Massao Ionashiro   +3 more
doaj   +1 more source

Organocatalytic asymmetric addition of malonates to unsaturated 1,4-diketones

Beilstein Journal of Organic Chemistry, 2012
The organocatalytic Michael addition of malonates to symmetric unsaturated 1,4-diketones catalyzed by thiourea and squaramide derivatives with Cinchona alkaloids afforded the formation of a new C–C bond in high yields (up to 98%) and enantiomeric ...
Sergei Žari, Tiiu Kailas, Marina Kudrjashova, Mario Öeren, Ivar Järving, Toomas Tamm, Margus Lopp, Tõnis Kanger   +7 more
doaj   +1 more source

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

Molecules, 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, Zhining Li, Jun Zhao, Ying Xie, Jie Song, Fang Wu, Han Xiao, Pengcheng Zheng, Chenghao Tang   +8 more
doaj   +1 more source

Asymmetric Organocatalysis-A Powerful Technology Platform for Academia and Industry: Pregabalin as a Case Study [PDF]

, 2022
Enantioselective organocatalysis has quickly established itself as the third pillar of asymmetric catalysis. It is a powerful technology platform, and it has a tremendous impact in both academic and industrial settings.
Bernardi, L, Carlone, A, Fini, F, Giorgianni, G, Pesciaioli, F, Secci, F   +5 more
core   +1 more source

Intermolecular Reductive Couplings of Arylidene Malonates via Lewis Acid/Photoredox Cooperative Catalysis.

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

Impact of Carboxyl Groups in Graphene Oxide on Chemoselective Alcohol Oxidation with Ultra-Low Carbocatalyst Loading

Scientific Reports, 2017
A highly efficient and simple chemoselective aerobic oxidation of primary alcohols to either aldehydes or carboxylic acids in the presence of nitric acid was developed, utilising 5 wt% graphene oxide as a carbocatalyst under ambient reaction conditions ...
Yan Cui, Young Hee Lee, Jung Woon Yang
doaj   +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, Xiao Liang, Kun Wei, Yu-Rong Yang   +3 more
semanticscholar   +1 more source

Reductive annulations of arylidene malonates with unsaturated electrophiles using photoredox/Lewis acid cooperative catalysis

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, Benjamin R. McDonald, K. Scheidt   +2 more
semanticscholar   +1 more source