Substituent - Wikipedia, the free encyclopedia
In organic chemistry and biochemistry, a substituent is an atom or group of atoms substituted in place of a hydrogen atom on the parent chain of a hydrocarbon.
Hammett equation - Wikipedia, the free encyclopedia
The Hammett equation in organic chemistry describes a linear free-energy relationship relating reaction rates and equilibrium constants for many reactions involving benzoic acid ...
Substituent Constants
Estimation of sp 3 Chemical Shifts A General Approach for Calculating Proton Chemical Shifts for Methyl, Methylene, and Methine Protons When There Are One or More Substituents ...
substituent - Wiktionary
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US 7335454 - Positive resist composition
##STR00005## wherein R.sub.41 represents an alkyl group which may have a substituent, a cycloalkyl group which may have a substituent, an aralkyl group which may have a substituent ...
US 6737143 - Optical recording medium, optical recording method and ...
where, R.sub.1 and R.sub.2 are substituent groups which may be the same or may be different, and each expresses a hydrogen atom, an alkyl group which may have a substituent, an ...
Benzene as a substitutent
Benzene as a substituent. In some cases, the benzene ring needs to be treated as a substituent. In these cases, the term phenyl, is used to designate the presence ...
Common alkyl substituents
the prefix "n-"denotes the straight chain substituent i.e. n-hexyl = CH 3 CH 2 CH 2 CH 2 CH 2 CH 2-the symbol "R" is commonly used to generically represent an alkyl group, e.g. R-X
O=CHem Electrophilic Aromatic Substitution
Electrophilic Aromatic Substitution Reactions III Substituent Effects: Orientation Introduction-In benzene, C 6 H 6, all six hydrogen atoms are identical.
Substituent Effects
Substituent Effects. So far we have only seen electrophilic aromatic substitution of benzene but substituted benzenes can also undergo further substitution to give ...
