Classification of Organic Reactions:  Similarity of Reactions Based on Changes in the Electronic Features of Oxygen Atoms at the Reaction Sites1

1998 ◽  
Vol 38 (2) ◽  
pp. 210-219 ◽  
Author(s):  
Hiroko Satoh ◽  
Oliver Sacher ◽  
Tadashi Nakata ◽  
Lingran Chen ◽  
Johann Gasteiger ◽  
...  
Keyword(s):  
Organic Reactions ◽  
Oxygen Atoms

ChemInform Abstract: Classification of Organic Reactions: Similarity of Reactions Based on Changes in the Electronic Features of Oxygen Atoms at the Reaction Sites

ChemInform ◽  
2010 ◽  
Vol 29 (27) ◽  
pp. no-no
Author(s):  
H. SATOH ◽  
O. SACHER ◽  
T. NAKATA ◽  
L. CHEN ◽  
J. GASTEINER ◽  
...  
Keyword(s):  
Organic Reactions ◽  
Oxygen Atoms

scholarly journals Philicity and Fugality Scales for Organic Reactions

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Rodrigo Ormazábal-Toledo ◽  
Renato Contreras
Keyword(s):  
Organic Chemistry ◽  
Reaction Mechanisms ◽  
Organic Reactions ◽  
Organic Reaction ◽  
Reactivity Indices ◽  
Leaving Groups ◽  
Set Up ◽  
Definition Of ◽  
Complete Account

Theoretical scales of reactivity and selectivity are important tools to explain and to predict reactivity patterns, including reaction mechanisms. The main achievement of these efforts has been the incorporation of such concepts in advanced texts of organic chemistry. In this way, the modern organic chemistry language has become more quantitative, making the classification of organic reactions an easier task. The reactivity scales are also useful to set up a number of empirical rules that help in rationalizing and in some cases anticipating the possible reaction mechanisms that can be operative in a given organic reaction. In this review, we intend to give a brief but complete account on this matter, introducing the conceptual basis that leads to the definition of reactivity indices amenable to build up quantitative models of reactivity in organic reactions. The emphasis is put on two basic concepts describing electron-rich and electron-deficient systems, namely, nucleophile and electrophiles. We then show that the regional nucleophilicity and electrophilicity become the natural descriptors of electrofugality and nucleofugality, respectively. In this way, we obtain a closed body of concepts that suffices to describe electron releasing and electron accepting molecules together with the description of permanent and leaving groups in addition, nucleophilic substitution and elimination reactions.

Classification of organic reactions using similarity

Tetrahedron ◽  
1997 ◽  
Vol 53 (41) ◽  
pp. 14085-14106 ◽  
Author(s):  
Guido Sello ◽  
Manuela Termini
Keyword(s):  
Organic Reactions

Note on the spectral classification of carbon stars in the photographic infrared region

1966 ◽  
Vol 24 ◽  
pp. 21-23
Author(s):  
Y. Fujita
Keyword(s):  
Infrared Region ◽  
Spectral Classification ◽  
Carbon Stars

We have investigated the spectrograms (dispersion: 8Å/mm) in the photographic infrared region fromλ7500 toλ9000 of some carbon stars obtained by the coudé spectrograph of the 74-inch reflector attached to the Okayama Astrophysical Observatory. The names of the stars investigated are listed in Table 1.

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