Results 121 to 130 of about 138,145 (310)

Bookreview, Basic Organic Stereochemistry [PDF]

, 2001
Ian J. S. Fairlamb
openalex   +1 more source

Structure determination of new algal toxins using NMR methods [PDF]

, 2006
Shellfish are considered a delicacy by many consumers. In NZ, as in many overseas countries, there is a now thriv¬ing shellfish industry servicing both domestic and inter-national markets. Periodically shellfish accumulate harm¬ful levels of a variety of
Miles, Christopher O., Wilkins, Alistair L.   +1 more
core  

An oxorhenium complex bearing a chiral cyclohexane‐1‐olato‐2‐thiolato ligand: Synthesis, stereochemistry, and theoretical study of parity violation vibrational frequency shifts [PDF]

, 2017
Nidal Saleh, Radovan Bast, Nicolas Vanthuyne, Christian Roussel, Trond Saue, Benoît Darquié, Jeanne Crassous   +6 more
openalex   +1 more source

Effective acetalization of furfural catalyzed by Fe‐ and Co‐oxalates: impact of alcohols structure on products composition

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Fe‐, Co‐, and FeCo‐oxalates supported on silica gel (5 wt% metal load) were synthesized, characterized, and tested for the first time in solvent‐free furfural (FF) acetalization with C1–C8 alcohols at 70–170 °C under both conventional and microwave (MW)‐assisted conditions. The interaction of FF with linear C1–C4 alcohols yielded pincer‐shaped
Alexander Pokutsa, Katarzyna Rydel‐Ciszek, Alina M. Balu, Rafael Luque   +3 more
wiley   +1 more source

Regio- and stereochemical stability induced by anomeric and gauche effects in difluorinated pyrrolidines

Beilstein Journal of Organic Chemistry
Selective fluorination of the pyrrolidine ring in proline motifs has been found to induce significant conformational changes that impact the structure and biological roles of modified peptides and proteins.
Ana Flávia Candida Silva, Francisco A. Martins, Matheus P. Freitas   +2 more
doaj   +1 more source

Principles and Applications of Stereochemistry. By M. North [PDF]

, 1999
Shu‐Kun Lin
openalex   +1 more source

Selective N‐Alkylation of Unprotected Amino Sugars by Alcohols. Application to the Synthesis of Sugar‐Based Surfactants

ChemistryEurope, EarlyView.
A borrowing hydrogen strategy using an NHC‐Ir(III) catalyst enables selective N‐functionalization of unprotected amino sugars using alcohols as alkylating agents. The use of unprotected substrates avoids extra steps of protection/deprotection, minimizing waste generation.
Aitor Bermejo‐López, Beatriz Saavedra, Kevin M. Dorst, María Obieta, Patrick Maguire, Elisa Martínez‐Castro, Göran Widmalm, Belén Martín‐Matute   +7 more
wiley   +1 more source

Imidazoline‐Proline and Imidazoline‐Prolinate Ligands for Copper‐Catalyzed Asymmetric Exo‐Selective [3 + 2] Cycloaddition of Iminoesters with Nitroalkenes

ChemistryEurope, EarlyView.
From a modular synthesis of nonphosphine chiral nitrogen‐based chiral imidazoline–amino acid ligands, two new chiral imidazoline–proline‐copper catalysts are developed for targeting exo‐selective [3 + 2] cycloaddition reaction. Density functional theory studies rationalize the observed stereoselectivity and the distinct chiral pockets of the two ...
Yan Yu, Takuya Shimada, Chihiro Tokumitsu, Ayaka Fujiwara, Takayoshi Arai   +4 more
wiley   +1 more source

Stereochemistry of the dTDP-glucose oxidoreductase reaction.

, 1977
Carl E. Snipes, G. U. Brillinger, L. G. Sellers, Leonard Mascaro, H G Floss   +4 more
openalex   +1 more source

Kristallchemische Analyse der Stereochemie des Kations und Anions in Bis(triphenylphosphin)iminium-di(phthalocyaninato)metallaten der Selenen Erden, (PNP)[Ln(Pc^2-)₂]•xH₂O (Ln = La, Gd, Tm; x ≤ 0,5) / Crystalchemical analysis of the stereochemistry of the cations and anions in bis(triphenylphosphine)iminium di(phthalocyaninato)metalates of the rare earth elements, (PNP)[Ln(Pc^2-)₂]•xH₂O (Ln = La, Gd, Tm; x ≤ 0,5) [PDF]

, 1994
M. Safarpour Haghighi, A. Franken, Heiner Homborg   +2 more
openalex   +1 more source