Results 191 to 200 of about 39,817 (294)

Organocatalytic atroposelective <i>de novo</i> construction of monoaxially and 1,4-diaxially chiral fused uracils with potential antitumor activity. [PDF]

Chem Sci
Ren Y, Lin C, Zhang H, Liu Z, Wei D, Feng J, Du D.   +6 more
europepmc   +1 more source

Covalent immobilization of the Jacobsen catalyst on mesoporous phenolic polymer : a highly enantioselective and stable asymmetric epoxidation catalyst [PDF]

, 2013
Bogaerts, Thomas, De Decker, Jeroen, Delahaye, Sander, Lynen, Frederic, Muylaert, Ilke, Van Der Voort, Pascal, Van Speybroeck, Veronique, Verberckmoes, An   +7 more
core   +2 more sources

(R)‐ and (S)‐SbF3(C8H9NO3): Chiral Antimony‐Based Hybrid Materials with Enhanced Second‐Harmonic Generation and Birefringence

Chemistry – An Asian Journal, EarlyView.
We report two chiral NCS compounds, (R)‐Sb and (S)‐Sb, featuring aligned Sb3⁺ lone pairs and hydrogen‐bonded [SbOF₃] polyhedra with 4‐hydroxyphenylglycine. These structures exhibit strong SHG (2.6 × KDP), a wide band gap (4.19 eV), and suitable birefringence (0.184@546.1 nm), highlighting the potential of Sb3⁺‐based hybrids for NLO applications ...
Seoyeon Choi, Kang Min Ok
wiley   +1 more source

Precise construction of spiro stereocenters <i>via</i> enantioselective radical addition through modulating photocatalysis from redox to energy transfer. [PDF]

Chem Sci
Liu F, Guo Y, Lu W, Zhao X, Yin Y, Jiang Z.   +5 more
europepmc   +1 more source

Sustainable biofuel production from fish processing waste: lipase‐catalyzed hydroesterification of tilapia residual oil

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Fishing waste and byproducts, whether naturally occurring or from industrial processing, are important sources of high‐value compounds. Fertilizers, biomaterials, cosmetics, biolubricants, and biodiesel are some of the substances that can be obtained from these residues. The objective of this study was to conduct a theoretical and experimental
Patrick da Silva Sousa, Francisco Simão Neto, Paulo Gonçalves de Sousa Junior, Marcos Carlos de Mattos, Maria Alexsandra de Sousa Rios, Aluísio Marques da Fonseca, Diego Lomonaco, José C. S. dos Santos   +7 more
wiley   +1 more source

Photoinduced copper-catalysed enantioselective amination of allylic and propargylic C-H bonds. [PDF]

Chem Sci
Dai L, Chen YY, Wang JJ, Chen JJ, Zhou QL.   +4 more
europepmc   +1 more source

α‐Azaaryl carbonyl derivatives in stereodivergent catalytic reactions

Bulletin of the Korean Chemical Society, EarlyView.
This review highlights recent progress in the catalytic synthesis of chiral azaarenes, focusing on α‐azaaryl carbonyl derivatives as versatile precursors. By leveraging chiral Lewis acid catalysis, stereodivergent reactions with diverse electrophiles enable precise construction of multi‐stereogenic azaarenes, offering new opportunities for advanced ...
Ilwoo Song, Byungjun Kim, Hooseung Lee, Sarah Yunmi Lee   +3 more
wiley   +1 more source

Performance-Enhancing Asymmetric Catalysis Driven by Achiral Counterion Design. [PDF]

J Am Chem Soc
Deng Z, Payne JL, Vishe M, Jan JEL, Funk CM, Johnston JN.   +5 more
europepmc   +1 more source

Cp*Co(III)‐catalyzed C–H functionalization of bioactive heterocyclic motifs

Bulletin of the Korean Chemical Society, EarlyView.
Directed carbon–hydrogen bond functionalization of biologically active scaffolds is attractive as it enables the selective modification of sophisticated structures, enhancing the efficiency of drug development by adopting diverse functional groups. This review summarizes recent advances in cobalt‐catalyzed C–H functionalizations of bioactive motifs ...
Yeongmi Park, Junbeom Park, Yong Ho Lee, Jongwoo Son   +3 more
wiley   +1 more source

Enantioselective synthesis of spiro[indoline-3,1'-pyrazolo[1,2-<i>b</i>]phthalazine] derivatives <i>via</i> an organocatalytic three-component cascade reaction. [PDF]

RSC Adv
Song L, Sun Y, An R, Wang L, Jin Y.
europepmc   +1 more source