Results 91 to 100 of about 43,957 (340)

Cross-Coupling of C—Si Bond by Using of Silyl Electrophiles [PDF]

open access: bronze, 2022
Siqi Cong   +6 more
openalex   +1 more source

Non-empirical calculations for minimal energetic reaction pathways of hf molecule addition to acetylene and methylacetylene

open access: yesТонкие химические технологии, 2009
Potential energy surfaces of gas-phased synchronous addition of HF to acetylene and methylacetylene. A non-empirical Harthree-Fock-Ruthane method (Gaussian-03, G-31++G** basis) with electronic correlation consideration in MP2 approximation (Moeller ...
Yu. B. Kirillov, N. M. Klimenko
doaj  

A stereodivergent asymmetric approach to difluorinated aldonic acids [PDF]

open access: yes, 2004
A (bromodifluoromethyl)alkyne has been deployed in a stereoselective route to difluorinated aldonic acid analogues, in which a Sharpless asymmetric dihydroxylation reaction and diastereoisomer separation set the stage for phenyl group ...
Audouard, Christophe   +6 more
core   +1 more source

Hydrazones as Singular Reagents in Asymmetric Organocatalysis [PDF]

open access: yes, 2016
This Minireview summarizes strategies and developments regarding the use of hydrazones as reagents in asymmetric organocatalysis, their distinct roles in nucleophile–electrophile, cycloaddition, and cyclization reactions.
Fernández Fernández, Rosario Fátima   +4 more
core   +1 more source

electrophile

open access: yes, 2014
Citation: 'electrophile' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.E02020 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Synthesis of Arecatannin A1 from Dimeric Epicatechin Electrophile

open access: yesNatural Product Communications, 2015
Synthesis of arrecatannin A1 (1) was accomplished from dimeric epicatechin electrophile, which was prepared by Zn(OTf) 2 mediated self-condensation, and monomeric catechin nucleophile.
Manato Suda   +7 more
doaj   +1 more source

Where Electrophile Signaling and Covalent Ligand—Target Mining Converge

open access: yesCHIMIA, 2020
Interests in learning how to engineer most effective covalent ligands, identify novel functional targets, and define precise mechanism-of-action are rapidly growing in both academia and pharmaceutical industries. We here illuminate the establishment of a
Yimon Aye
doaj   +1 more source

Sonochemical synthesis of bis(tri-n-butylstannyl) aromatic compounds via Barbier-like reactions [PDF]

open access: yes, 2013
This paper reports a study of the synthesis of aryltri-n-butylstannanes via a sonochemical Barbier reaction of aryl- and heteroaryl bromides with bis(tri-n-butyltin) oxide (2) in THF.
Fidelibus, Pablo Martin   +5 more
core   +2 more sources

Asymmetric cyanation of imines via dipeptide-derived organophosphine dual-reagent catalysis

open access: yesNature Communications, 2016
The Strecker reaction is a power method for the synthesis of cyano-substituted compounds. Here the authors report a dual-reagent system for asymmetric Strecker reactions, where an in situformed organocatalyst/methyl acrylate zwitterionic adduct activates
Hong-Yu Wang   +4 more
doaj   +1 more source

Ab initio study of the mechanism of carboxylic acids cross-ketonization on monoclinic zirconia via condensation to beta-keto acids followed by decarboxylation [PDF]

open access: yes, 2017
Catalytic mechanism of acetic and isobutyric acids mixture conversion into two symmetrical and one cross-ketone product on monoclinic zirconia (111) surface was extensively modeled by Density Functional Theory for periodic structures.
Bishop, Marc D.   +3 more
core   +2 more sources

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