Results 91 to 100 of about 2,457 (204)

Synthesis of 1‐Alkynylboronates, 1,1‐Diborylalkenes, and 1,1,1‐Triborylalkanes: Challenges and Opportunities

open access: yesChemistry – A European Journal, Volume 32, Issue 19, 22 May 2026.
ABSTRACT In the field of organoboron chemistry, multi(boronate) esters have emerged as crucial intermediates, with various applications in synthetic chemistry, material technology, and life sciences. This mini‐review discusses recent advancement in the synthesis of these versatile compounds, particularly alkynylboronates, 1,1‐diborylalkenes, and 1,1,1 ...
Son Hoai Doan   +2 more
wiley   +1 more source

Chiral Sodium Glycerophosphate Catalyst for Enantioselective Michael Reactions of Chalcones

open access: yesMolecules
A chiral sodium glycerophosphate is successfully exploited as a catalyst in the Michael addition of methyl malonate to a number of chalcones. The reactions supplied the target adducts in satisfactory yields and good enantiomeric excesses.
Giovanni Ghigo   +3 more
doaj   +1 more source

Bifunctional Photocatalysts: Exploiting Proximity for Enhanced Reaction Performance

open access: yesChemistry – A European Journal, Volume 32, Issue 19, 22 May 2026.
This review covers the application of the bifunctional approach to photocatalysis as a means to attain (enhanced) enantioselectivity, and, more in general, as a strategy to enhance the catalytic performance through an effective use of short‐lived reaction intermediates.
Luigi Dolcini   +3 more
wiley   +1 more source

Design and Synthesis of Lactose‐Derived Ligands and Their Application in Asymmetric Friedel–Crafts Alkylation

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 19, 22 May 2026.
This work describes the synthesis of lactose‐ and glucose‐derived chiral ligands and their application in the catalytic enantioselective Friedel–Crafts alkylation of indole with a series of trans‐β‐nitrostyrenes. The optimal ligand was an acetate protected, lactose‐derived pyridyl imine and its zinc complex afforded ees up to 93% and yields up to 93 ...
Sandra Bulawa   +2 more
wiley   +1 more source

Zn(OTf)2‐Catalyzed Dehydrocoupling of Terminal Alkynes with Diisopropylaminoborane: A Modular Route to Mono‐ and Dialkynylboranes

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 10, 19 May 2026.
We report a Zn(OTf)2‐catalyzed dehydrocoupling of terminal alkynes with diisopropylaminoborane (DIPOB), which enables the selective synthesis of mono‐ and dialkynylboranes under mild conditions. This method provides a versatile platform for accessing stable tetracoordinate alkynylborons while effectively suppressing hydroboration side reactions.
Etienne Bequet‐Ermoy   +4 more
wiley   +1 more source

Sustainable Syntheses of p‐Hydroxycinnamic‐Based Macrobisphenols: Progress, Challenges, and Comparative Assessment of Yield and Sustainability

open access: yesChemSusChem, Volume 19, Issue 9, 14 May 2026.
The strengths and limitations of sustainable routes to macrobisphenols — safe‐by‐design biomass‐derived bisphenols — were critically evaluated to support informed selection based on sustainability metrics (EcoScale, E‐factor), efficiency, cost, and scalability.
Amandine L. Flourat   +8 more
wiley   +1 more source

Dynamic Kinetic Resolution of Axially Chiral Heterobiaryl N‐Oxides via Peptide‐Catalyzed Aldol Reaction

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 18, 14 May 2026.
Resin‐supported tripeptide achieved the dynamic kinetic resolution in the catalytic aldol reaction of formylated heterobiaryl N‐oxides with high efficiency and enantioselectivity. The system features a broad substrate scope and a recyclable catalyst.
Jiaqi Tian   +3 more
wiley   +1 more source

1,2,6‐Thiadiazin‐4‐ones: Robust Photocatalysts for the Green Aerobic Oxidation of Sulfides to Sulfoxides

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 18, 14 May 2026.
A new photocatalyst for the aerobic photochemical oxidation of sulfides to sulfoxides is described under really low catalyst loading (0.01 mol%) and methanol as the green solvent. The chemoselective oxidation of sulfides to sulfoxides is accomplished using a new family of photocatalysts, namely 1,2,6‐thiadiazin‐4‐ones. Utilizing a low catalyst loading (
Charikleia I. Karaousta   +6 more
wiley   +1 more source

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