Etherification via Aromatic Substitution on 1,3-Disubstituted Benzene Derivatives

2022 ◽  
Author(s):  
Marina Tsuzaki ◽  
Shin Ando ◽  
Tadao Ishizuka
Keyword(s):  
Benzene Derivatives ◽  
Aromatic Substitution ◽  
Disubstituted Benzene

Coefficients of molecular homeomorphism and crystalline isomorphism in the series of para-disubstituted benzene derivatives

1991 ◽  
Vol 88 ◽  
pp. 509-514 ◽  
Author(s):  
MA Cuevas Diarte ◽  
T Calvet ◽  
M Labrador ◽  
E Estop ◽  
HAJ Oonk ◽  
...  
Keyword(s):  
Benzene Derivatives ◽  
Disubstituted Benzene

Unveiling the Regioselectivity in Electrophilic Aromatic Substitution Reactions of Deactivated Benzenes through Molecular Electron Density Theory

2021 ◽  
Author(s):  
Luis R. Domingo ◽  
Mar Ríos-Gutiérrez ◽  
María José Aurell
Keyword(s):  
Electron Density ◽  
Electrophilic Aromatic Substitution ◽  
Benzene Derivatives ◽  
Aromatic Substitution ◽  
Substitution Reactions ◽  
Molecular Electron ◽  
Molecular Electron Density Theory

The origin of the meta regioselectivity in electrophilic aromatic substitution (EAS) reactions of deactivated benzene derivatives is herein analysed through Molecular Electron Density Theory (MEDT). To this end, the EAS...

scholarly journals Macrocyclization Using RCM Reactions. Synthesis of Simple Metacyclophanes and Synthetic Efforts toward Platycarynol, a 15-Membered Aromatic Ether

2016 ◽  
Vol 11 (8) ◽  
pp. 1934578X1601100
Author(s):  
Katsuyuki Nakashima ◽  
Hatsuna Matsunaga ◽  
Masako Ito ◽  
Hiroshi Minami ◽  
Akihito Aiba ◽  
...  
Keyword(s):  
Ground State ◽  
Diphenyl Ether ◽  
Benzene Derivatives ◽  
Disubstituted Benzene ◽  
Aromatic Ether

Preparation of 13- to 19-membered carbocycles (metacyclophanes) from 1,3-disubstituted benzene derivatives has been successfully carried out using the RCM reaction, but similar starting materials having diphenyl ether did not cyclize to 15-membered compounds, whose ground state conformations were calculated and discussed. Several attempts to cyclize to form platycarynol are described.

Aromatic Substitution Reactions between Ionized Benzene Derivatives and Neutral Methyl Isocyanide

2010 ◽  
Vol 114 (27) ◽  
pp. 7408-7416 ◽  
Author(s):  
Guy Bouchoux ◽  
Julien De Winter ◽  
Robert Flammang ◽  
Pascal Gerbaux
Keyword(s):  
Benzene Derivatives ◽  
Aromatic Substitution ◽  
Substitution Reactions ◽  
Methyl Isocyanide

Ring openings of γ- and δ-lactones to form γ- and δ-hydroxyamides. Cyclodehydration. Mass spectra of δ-hydroxyamides

1969 ◽  
Vol 47 (19) ◽  
pp. 3671-3676 ◽  
Author(s):  
Earl M. Levi ◽  
Chung-Ling Mao ◽  
Charles R. Hauser
Keyword(s):  
Mass Spectrometry ◽  
Sulfuric Acid ◽  
Mass Spectra ◽  
Benzene Derivatives ◽  
Ortho Effect ◽  
Disubstituted Benzene

Ring openings of γ- and δ-lactones were effected with potassium amide or hydrazine to form γ- and δ-hydroxyamides, which were cyclodehydrated with sulfuric acid to give γ- and δ-lactams, respectively. These products are, respectively, phthalimidines and 3,4-dihydroisocarbostyrils having no substituent on nitrogen or having the N—NH2 group. The possible linear dehydration of the δ-hydroxyamides was not observed. The δ-hydroxyamides exhibited, on mass spectrometry, a type of carbon–carbon cleavage that has apparently not been reported for ordinary alcohols. An example of the "ortho effect" in mass spectra of o-disubstituted benzene derivatives is also discussed.

scholarly journals Nucleophilicity Index Based on Atomic Natural Orbitals

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Dariusz W. Szczepanik ◽  
Janusz Mrozek
Keyword(s):  
Electrophilic Aromatic Substitution ◽  
Benzene Derivatives ◽  
Aromatic Substitution ◽  
Simple Method ◽  
Natural Orbitals ◽  
Atomic Natural Orbitals ◽  
Atomic Populations

A simple method of evaluating a semilocal (regional) nucleophilicity is introduced. The concept involves use of the natural orbitals for atomic populations to identify the most “reactive population” of electrons on particular atom in molecule. The results of test calculations considering the regioselectivity problem in electrophilic aromatic substitution to the benzene derivatives are presented and briefly discussed.

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