Results 91 to 100 of about 224,439 (406)
The Synthesis and Characterization of New, Robust Titanium (IV) Scorpionate Complexes [PDF]
, 2010 Titanium complexes possessing sterically encumbered ligands have allowed for the preparation of reactive moieties (imido, alkylidene and alkylidyne species) relevant to reactions such as olefin polymerization and alkyne hydroamination.
Aaron D. Sadow +2 more
core +2 more sources
Journal of the American Chemical Society, 2019 The alkylation of amines with either alcohols or carboxylic acids represents a mild and safe alternative to the use of genotoxic alkyl halides and sulfonate esters.
J. I. Ramsden +6 more
semanticscholar +1 more source
Advanced Synthesis &Catalysis, EarlyView.Abstract Photoinduced catalytic alkylation reactions of active methine compounds with nonactivated alkenes have been developed using an organophotocatalyst, a metal Lewis acid, an arylthiol, and an amine base catalyst system. The alkylation reactions proceeded smoothly under ambient conditions with blue light irradiation, affording the desired products
Yasuhiro Yamashita +4 more
wiley +1 more source
Angewandte Chemie International Edition, Volume 62, Issue 3, January 16, 2023., 2023 The confined hydronium ions in zeolite create an intraporous ionic environment, which increases acid‐catalyzed reaction rates in a volcanic pattern at both saturated and low concentrations of substrates in the pores. Abstract The intracrystalline ionic environment in microporous zeolite can remarkably modify the excess chemical potential of adsorbed ...
Qiang Liu +5 more
wiley +1 more source
Molecules, 2021 Marine polysaccharides are part of the huge seaweeds resources and present many applications for several industries. In order to widen their potential as additives or bioactive compounds, some structural modifications have been studied.
Tiphaine Wong +6 more
doaj +1 more source
Substrate entering and product leaving trajectories predict an engulfing dynamic for the major conformational change of the β-lactam acylase [PDF]
, 2008 It is still a major challenge to acquire insight into the conformational changes between the ground state and the transition state of an enzyme, although conformational fluctuation within interconverting conformers has been widely investigated (1-4 ...
Guo-Ping Zhao +4 more
core +1 more source
Advanced Synthesis &Catalysis, Accepted Article.A photocatalytic strategy for the radical alkenylation of aliphatic C(sp3)–H bonds with 2,3‐allenoate esters is described. The protocol takes place upon irradiation of the reaction mixture in the presence of the decatungstate anion, which triggers C–H cleavage in the chosen aliphatic substrates.
Alexandra Jorea +2 more
wiley +1 more source
Simple synthesis of pyrrolo[3,2-e]indole-1-carbonitriles
Beilstein Journal of Organic Chemistry, 2013 Alkylation of 5-nitroindol-4-ylacetonitriles with ethyl chloroacetate, α-halomethyl ketones, and chloroacetonitrile followed by a treatment of the products with chlorotrimethylsilane in the presence of DBU gives 1-cyanopyrrolo[3,2-e]indoles substituted ...
Adam Trawczyński +3 more
doaj +1 more source
Synthesis of functionalized polyisobutylene and its block copolymers with D,L-lactide
Журнал Белорусского государственного университета: Химия, 2019 Method of reactive polyisobutylene modification by various alkoxybenzenes (anisole and 4-phenoxybutanol) was proposed to form functionalized polyisobutylenes.
Pavel A. Nikishau +4 more
doaj +1 more source
The Usefulness of Trivalent Phosphorus for the Synthesis of Dendrimers
Molecules, 2021 Dendrimers are hyperbranched macromolecules, which are synthesized step-by-step by the repetition of a series of reactions. While many different types of dendrimers are known, this review focusses on the use of trivalent phosphorus derivatives ...
Anne-Marie Caminade +2 more
doaj +1 more source