Results 211 to 220 of about 928,256 (295)

Bolapolyphiles With Bulky Carbosilane‐Based Lateral Groups—Reticular Design of Liquid Crystalline Pentagonal Honeycombs

open access: yesChemistry – A European Journal, EarlyView.
T‐shaped bolapolyphiles with highly branched carbosilane‐based side‐groups self‐assemble into liquid crystalline honeycombs composed of type‐2 pentagonal prismatic cells and p2gg plane group symmetry. ABSTRACT Periodic pentagon tessellations are rarely observed in self‐assembled molecular systems.
Christian Anders   +3 more
wiley   +1 more source

Carboxylate–Probase Catalyzed Favorskii Reaction

open access: yesChemistry – A European Journal, EarlyView.
Stronger together: A combination of a carboxylate catalyst and a silylating agent generates a stronger base catalyst for a metal‐free catalytic addition of alkynes to aldehydes and ketones under chemoselective, O‐silylative conditions. The reaction is proposed to proceed via quaternary ammonium (Q+) cation – acetylide anion ion pairs, with chiral ...
Anton Bannykh   +4 more
wiley   +1 more source

Molecular Sensory and GC-MS/MS Profiling of Key Aroma Compounds in Sauce-Flavor Base Baijiu. [PDF]

open access: yesFoods
Wang N   +9 more
europepmc   +1 more source

Ir Complexes With Mixed‐Valent Bidentate Ligands: From Complex Synthesis to Catalytic Application

open access: yesChemistry – A European Journal, EarlyView.
ABSTRACT The bidentate ligands Ph2P(E)NHPPh2 (E = S, Se) feature phosphorous atoms in two different oxidation states and provide the potential to tune chemical reactivity through the choice of donor E. The mononuclear complexes [Ir(COD){κ2‐P,E‐Ph2P(E)NPPh2}] (E = S 1a, Se 1b) were prepared from the dimer [IrClCOD]2 (COD = 1,5‐cyclooctadiene) and the ...
C. Gabriela Morales Salas   +4 more
wiley   +1 more source

C‐Terminal Functionalization Methods of Amino Acids, Peptides, and Proteins

open access: yesChemistry – A European Journal, EarlyView.
C‐terminal functionalization offers powerful routes to peptide and protein diversification, yet epimerization, hydrolysis, and selectivity remain key challenges. This Review surveys enzymatic, decarboxylative, and condensation strategies, highlighting advances toward chemo‐ and regioselective, protecting‐group‐free, atom‐efficient methods applicable to
Jay Hanssens   +3 more
wiley   +1 more source

Alkyne‐Assisted Stereospecific Skeletal Rearrangement via Nonclassical Carbocations

open access: yesChemistry – A European Journal, EarlyView.
We report stereospecific nucleophilic substitution of homopropargylic alcohols enabled by alkyne anchimeric assistance. Alcohol activation triggers formation of a nonclassical cyclopropylidenemethyl cation, allowing efficient chirality transfer to densely substituted tertiary homopropargyl fluorides.
Rajan Kumar Kharwar   +3 more
wiley   +1 more source

Modular Assembly of a Biocatalytic Material for Stereoselective C─Si Bond Formation

open access: yesChemistry – A European Journal, EarlyView.
A modular, carrier‐free enzyme foam derived from Rhodothermus marinus cytochrome c combines structural stability with catalytic efficiency for stereoselective C─Si bond formation. Streptavidin (STV)‐mediated protein crosslinking creates a robust, self‐supporting materials platform for next‐generation biocatalysis.
Marc F. Münker   +6 more
wiley   +1 more source

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