Results 191 to 200 of about 89,156 (285)

Energy‐Saving Dehydration of Primary Alcohol Under the Formation of Alkenes via a Bifunctional Clay Catalyst

ChemCatChem, EarlyView.
A commercial acid‐leached bentonite is used in the dehydration reaction of alcohols. A yield of 52% in the alkene formation was observed with FULCAT®‐22 F. IR spectroscopy revealed changes in Brønsted and Lewis acid sites with temperature, driving the reaction to different yields.
Margherita Cavallo, Adil Allahverdiyev, Melodj Dosa, Oscar Kelly, Valentina Crocellà, Francesca Bonino, Harald Gröger   +6 more
wiley   +1 more source

Purine Chemistry in the Early RNA World at the Origins of Life: From RNA and Nucleobases Lesions to Current Key Metabolic Routes. [PDF]

Chembiochem
Décout JL, Maurel MC.
europepmc   +1 more source

Alkylation of the Methionine Residues of Ribonuclease in 8 m Urea

, 1964
George R. Stark, William H. Stein
openalex   +1 more source

Synthesis of Mixed Phosphine–Phosphine Oxide Ligands by Rh(I)‐Catalyzed C─H Bond Alkylation

ChemCatChem, EarlyView.
An efficient method for the synthesis of mixed phosphine–phosphine oxide ligands via Rh(I)‐catalyzed C─H bond alkylation of biarylphosphines was developed. The resulting hemilabile ligands demonstrate high reactivity in Pd‐catalyzed Buchwald–Hartwig coupling with ammonia, achieving excellent yields. This work highlights the potential of mixed phosphine–
Loris Geminiani, Ralf Jackstell, Kathrin Junge, Matthias Beller, Jean‐François Soulé   +4 more
wiley   +1 more source

The Eye Lens Protein, γS Crystallin, Undergoes Glutathionylation-Induced Disulfide Bonding Between Cysteines 22 and 26. [PDF]

Biomolecules
Halverson-Kolkind K, Thorn DC, Tovar-Ramirez M, Shakhnovich E, David L, Lampi K.   +5 more
europepmc   +1 more source

Advances in Ligand‐Driven Pd‐Catalyzed C─H Functionalizations: Recent Insights and Updates

ChemCatChem, EarlyView.
The most significant advances in ligand‐driven Pd‐catalyzed organic synthesis over the past two years are presented. Processes involving C─H activation of substrates, avoiding their prefunctionalization are illustrated. Both the activity and selectivity of the catalyst depend on the design of the ligands (pyridones, pyridines, amino acids, phosphines ...
Jesús Moradell, Cosmina Bohan, Alexandra Pop, Esteban P. Urriolabeitia   +3 more
wiley   +1 more source

Access to quaternary-carbon-containing β-alkyl amides <i>via</i> persulfate-promoted domino alkylation/smiles rearrangement of alkenes. [PDF]

RSC Adv
Yang X, Wan X, Yang WC, Fang H.
europepmc   +1 more source

Copper Photoredox‐Catalyzed Allylation of Imines with Allylic Bromides

ChemCatChem, EarlyView.
[Cu(neocuproine)(DPEphos)]PF6 ([Cu(NN)(PP)]+) has been developed as a copper photocatalyst for the allylation of imines with allylic bromides. The transformation can be applied to a variety of imines, and the mechanism is believed to involve the direct addition of an allylic radical to the C═N bond.
Oliver Rafn Dan, Robert Madsen
wiley   +1 more source

Recent advances in amidyl radical-mediated photocatalytic direct intermolecular hydrogen atom transfer. [PDF]

Beilstein J Org Chem
Wang HS, Li L, Chen X, Wu JL, Sun K, Chen XL, Qu LB, Yu B.   +7 more
europepmc   +1 more source

The Alkylation of the Active Site of Trypsin with Iodoacetamide in the Presence of Alkylguanidines

, 1965
Tadashi Inagami
openalex   +1 more source