scholarly journals Electrostatically-directed Pd-catalysis in combination with C–H activation: site-selective coupling of remote chlorides with fluoroarenes and fluoroheteroarenes

2020 ◽  
Vol 11 (11) ◽  
pp. 3022-3027 ◽  
Author(s):  
William A. Golding ◽  
Robert J. Phipps
Keyword(s):  
Oxidative Addition ◽  
Site Selective ◽  
Activation Site

Electrostatically-directed oxidative addition is compatible with a subsequent C–H activation step, enabling site-selective coupling of remote chlorides with fluoroarenes and fluoroheteroarenes.

ChemInform Abstract: Non-Coordinating-Anion-Directed Reversal of Activation Site: Selective C-H Bond Activation of N-Aryl Rings.

ChemInform ◽  
2016 ◽  
Vol 47 (45) ◽  
Author(s):  
Dawei Wang ◽  
Xiaoli Yu ◽  
Xiang Xu ◽  
Bingyang Ge ◽  
Xiaoli Wang ◽  
...  
Keyword(s):  
Bond Activation ◽  
Site Selective ◽  
Activation Site

Chemoselective synthesis of heterobimetallic bis-NHC complexes

2020 ◽  
Vol 49 (41) ◽  
pp. 14388-14392
Author(s):  
Patrick D. Dutschke ◽  
Stefanie Bente ◽  
Constantin G. Daniliuc ◽  
Jenny Kinas ◽  
Alexander Hepp ◽  
...  
Keyword(s):  
Oxidative Addition ◽  
Addition Reactions ◽  
Chemoselective Synthesis ◽  
Site Selective

Heterobimetallic bis-NHC complexes have been obtained by the site-selective metallation of 8-iodotheophylline/imidazolium bis-NHC precursors using a combination of deprotonation-metallation and oxidative addition reactions.

Non-coordinating-Anion-Directed Reversal of Activation Site: Selective C−H Bond Activation ofN-Aryl Rings

2016 ◽  
Vol 22 (25) ◽  
pp. 8663-8668 ◽  
Author(s):  
Dawei Wang ◽  
Xiaoli Yu ◽  
Xiang Xu ◽  
Bingyang Ge ◽  
Xiaoli Wang ◽  
...  
Keyword(s):  
Bond Activation ◽  
Site Selective ◽  
Activation Site

Some Problems in the Oxidative Addition and Binding of an Ethylene to a Transition Metal Center.

1987 ◽  
Vol 6 (4) ◽  
pp. 902-902
Author(s):  
Jerome Silestre ◽  
Maria Calhorda ◽  
Roald Hoffman ◽  
Page Stoutland ◽  
Robert Bergman
Keyword(s):  
Transition Metal ◽  
Oxidative Addition ◽  
Metal Center

Chemical and Electrochemical Heteroepitaxial Growth of Chalcogenide Semiconductors from Solutions

1996 ◽  
Vol 451 ◽  
Author(s):  
D. Lincot ◽  
M. J. Furlong ◽  
M. Froment ◽  
R. Cortes ◽  
M. C. Bernard
Keyword(s):  
Heteroepitaxial Growth ◽  
X Ray Diffraction ◽  
Basic Principles ◽  
Lattice Match ◽  
X Ray ◽  
Chalcogenide Semiconductors ◽  
Influence Of Temperature On ◽  
Deposition Processes ◽  
A Site ◽  
Site Selective

ABSTRACTChalcogenide semiconductors have been deposited epitaxially from aqueous solutions either chemically or electrochemically at growth rates of up to 0.7 μmhr−1. After recalling the basic principles of these deposition processes, results are presented concerning chemically deposited CdS on InP, GaP and CuInSe2 substrates, electrodeposited CdTe on InP, and CdSAnP heterostructures. Characterisation of these structures by RHEED, TEM, HRTEM, and glazing angle X ray diffraction allows to analyse the effects of substrate orientation, polarity, lattice match plus the influence of temperature on epitaxial growth. These results are discussed in terms of self organisation and a site selective growth mechanisms due to the free enegy of formation of each compound.

para-Selective Cyanation of Arenes by H-Bonded Template

2019 ◽  
Author(s):  
Sandeep Pimparkar ◽  
Trisha Bhattacharya ◽  
Arun Maji ◽  
Argha Saha ◽  
Ramasamy Jayarajan ◽  
...  
Keyword(s):  
Selective Functionalization ◽  
Directing Group ◽  
Product Utility ◽  
Site Selective

The significance of site selective functionalization stands upon the superior selectivity, easy synthesis and diverse product utility. In this work we demonstrate the <i>para</i>-selective introduction of versatile nitrile moiety, enabled by detachable and reusable H-bonded auxiliary. The methodology holds its efficiency irrespective of substrate electronic bias. The conspicuous shift in the step energetics was probed by both experimental and computational mechanistic tools heralds the inception of <i>para</i>-deuteration. The synthetic impact of the methodology was highlighted with reusability of directing group and post synthetic modifications

para-Selective Cyanation of Arenes by H-Bonded Template

2019 ◽  
Author(s):  
Sandeep Pimparkar ◽  
Trisha Bhattacharya ◽  
Arun Maji ◽  
Argha Saha ◽  
Ramasamy Jayarajan ◽  
...  
Keyword(s):  
Selective Functionalization ◽  
Directing Group ◽  
Product Utility ◽  
Site Selective

The significance of site selective functionalization stands upon the superior selectivity, easy synthesis and diverse product utility. In this work we demonstrate the <i>para</i>-selective introduction of versatile nitrile moiety, enabled by detachable and reusable H-bonded auxiliary. The methodology holds its efficiency irrespective of substrate electronic bias. The conspicuous shift in the step energetics was probed by both experimental and computational mechanistic tools heralds the inception of <i>para</i>-deuteration. The synthetic impact of the methodology was highlighted with reusability of directing group and post synthetic modifications

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