Results 111 to 120 of about 23,269 (237)

Stereoselective Chemoenzymatic Synthesis Metaraminol Involving Gold‐Catalysed Alkyne Hydration and Carbonyl Biotransamination

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 16, 25 April 2026.
A chemoenzymatic synthesis of (1R,2S)‐metaraminol was developed by combining gold(I)‐catalysed alkyne hydration and stereoselective biotransamination in a sequential one‐pot process. Various phenol protection strategies were considered in oxidation‐reduction sequences, providing access to enantiopure propargylic alcohols as starting materials for ...
Lorena Escot   +2 more
wiley   +1 more source

Stereoselective Synthesis of Optically Active Aspartic Acid from Derivatives of Fumaric Acid and Maleic Acid [PDF]

open access: yes
Stereoselective synthesis of optically active aspartic acid from derivatives of fumaric acid and maleic ...
Harada, K., Matsumoto, K.
core   +1 more source

Synthesis of a Carbon‐Linked Acyldepsipeptide Derivative

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 15, 22 April 2026.
The synthesis of a methylene‐linked acyldepsipeptide (ADEP) is reported. Success relied upon an improve method to generate a versatile vinyl glycine methyl ester synthon and a rationally optimized Grubb’s metathesis. NMR and in silico studies revealed an unusual trans–trans proline orientation for this new unnatural ADEP analog, advancing the ...
Katelyn G. Stevens-Davis   +6 more
wiley   +1 more source

Conversion of N-Heptane on Pt/Al2O3 Catalyst [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 1994
Hydrogenation reaction with n-heptane on Pt/Al2O3 catalyst was investigated under the steady state condition in a fixed bed reactor. The catalyst was prepared under a variety of conditions, but the one chosen was non-acidic that is not considered a ...
Mohammad Moein
doaj  

Harnessing Toluene Solvent as a Reactant: Regioselective Benzyl Radical Addition to Multi‐π 1,5‐Enynes in a Copper‐Catalyzed Cascade to Indenes

open access: yesChemistry – A European Journal, Volume 32, Issue 14, 15 April 2026.
A copper‐catalyzed three‐component radical cascade of 1,5‐enynes with toluene and benzoic acids enables regioselective benzyl radical addition to multi‐Π systems, efficiently delivering polysubstituted indenes from an abundant solvent feedstock. ABSTRACT C─H activation of toluene generates a benzyl radical that undergoes C─C coupling, converting an ...
Saideh Rajai‐Daryasarei   +7 more
wiley   +1 more source

Chemoselectivity and Enantioselectivity in the Conjugate Reduction of Cinnamate Esters and a Tandem Conjugate Reduction‐Ester Hydrogenation Using Manganese Catalysts

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 14, 15 April 2026.
An improved synthesis of a manganese catalyst used for hydrogenation of ketones, esters and imines is reported. The catalyst has now been found to effect tandem conjugate reduction‐ester hydrogenations with very low amounts of allylic alcohol by‐products.
José A. Fuentes, Matthew L. Clarke
wiley   +1 more source

The Multifaceted Legacy of Thalidomide: Chemistry and Biology Driving Modern Drug Design

open access: yesChemMedChem, Volume 21, Issue 7, 14 April 2026.
Thalidomide serves as a molecular nexus linking chemistry and biology: advances in synthesis and structural understanding enable protein degradation technologies, while its immunomodulatory activity underpins anti‐inflammatory and anticancer therapies.
Konstantina Nikovia   +4 more
wiley   +1 more source

Selective Oxygenation of 3,4‐Dihydro‐2H‐Pyran to 5,6‐Dihydro‐2H‐Pyran‐2‐One With Pd/C Catalyst and Molecular Oxygen

open access: yesChemSusChem, Volume 19, Issue 7, 14 April 2026.
Selective oxygenation: The oxidation of 3,4‐dihydro‐2H‐pyran, which can be produced from lignocellulose‐derived furfural, was investigated with various catalysts using O2 as an oxidant in a H2O solvent. 5,6‐dihydro‐2H‐pyran‐2‐one, a value‐added product, was obtained in 52% yield with reusable Pd/C catalyst.
Naoki Kawabata   +3 more
wiley   +1 more source

Harnessing Copper's Potential: A Review of Cu-Based Catalysts for Glycerol Conversion

open access: yesBulletin of Chemical Reaction Engineering & Catalysis
The increasing depletion of fossil fuel reserves and environmental concerns have accelerated the search for sustainable alternatives, leading to the utilization of biodiesel as a renewable energy source. Glycerol, a key byproduct of biodiesel production,
Sabeel Ahmed   +2 more
doaj   +1 more source

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