Transannular interactions in dimer cation radicals of naphthalene derivatives. Conformation anomaly and stabilization energy

1986 ◽  
Vol 90 (8) ◽  
pp. 1564-1571 ◽  
Author(s):  
Atsushi Terahara ◽  
Hiroaki Ohya-Nishiguchi ◽  
Noboru Hirota ◽  
Akira Oku
Keyword(s):  
Stabilization Energy ◽  
Naphthalene Derivatives ◽  
Cation Radicals

scholarly journals Stabilization Energy and Spin Distribution in Pyrenophane Cation Radicals

1982 ◽  
Vol 55 (12) ◽  
pp. 3896-3898 ◽  
Author(s):  
Atsushi Terahara ◽  
Hiroaki Ohya-Nishiguchi ◽  
Noboru Hirota ◽  
Yoshiteru Sakata ◽  
Soichi Misumi ◽  
...  
Keyword(s):  
Stabilization Energy ◽  
Spin Distribution ◽  
Cation Radicals

Properties and Reactivity of First and Second Row Hydrides. IV. Interactions Between Hydrides and Their Radical Ions

1993 ◽  
Vol 58 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Rudolf Zahradník
Keyword(s):  
Radical Cations ◽  
Stabilization Energy ◽  
Hydrogen Atom Abstraction ◽  
Type Ii ◽  
Radical Ions ◽  
Reaction Products ◽  
Ion Molecule Reactions ◽  
Heats Of Reaction ◽  
Experimental Values ◽  
Easy Differentiation

The energies and heats of ion-molecule reactions have been calculated (MP4/6-31G**//6-31G** or better level) and compared with the experimental values obtained from the heats of formation. Two main types of reactions have been studied: (i) AHn + AHn+• ↔ AHn+1+ + AHn-1• (A = C to F and Si to Cl), (ii) AHn + BHm+• ↔ AHn+1+ + BHm-1• or AHn-1+• + BHm+1+ (A and B = C to F). In contrast to (i), processes of type (ii) permit easy differentiation between the proton transfer and hydrogen atom abstraction mechanisms. A third type of interaction involves reactions with radical anions (A = Li to F); comparison was made with analogous processes with radical cations. A brief comment is made about the influence of the level of computational sophistication on the energies and heats of reaction, as well as on the stabilization energy of a hydrogen bonded intermediate, a structure which is similar to that of the reaction products.

scholarly journals Tandem Fries Reaction–Conjugate Addition under Microwave Irradiation in Dry Media; One-pot Synthesis of Flavanones

1999 ◽  
Vol 23 (9) ◽  
pp. 574-575
Author(s):  
Firouz Matloubi Moghaddam ◽  
Mohammad Ghaffarzadeh ◽  
Seyed Hossein Abdi-Oskoui
Keyword(s):  
Microwave Irradiation ◽  
Silica Gel ◽  
Conjugate Addition ◽  
Solvent Free ◽  
Naphthalene Derivatives ◽  
One Pot ◽  
Fries Rearrangement ◽  
One Pot Synthesis ◽  
Solvent Free Conditions ◽  
Fries Reaction

An AICl3–ZnCl2 mixture supported on silica gel is found to be an efficient medium for the Fries rearrangement of acyloxybenzene or naphthalene derivatives in solvent-free conditions under microwave irradiation.

Sign in / Sign up

Export Citation Format

Share Document