benzene 3 or more substituents Flashcards
3 or more substituents Benzene derivatives
Name of substituents
position (similar to cycloalkanes)
Name (alphabetical order)
Name of benzene ring
If two substituents, the lowest sequence is based on _____
Alphabetical order
If there are three substituents in a benzene ring with no special name, priority is based on _____
Lowest sequence
Benzene as an derivative
Aryl (Ar) group as substituents
Ar-OH
Phenol
when aryl groups act as a substituent
Ar
when benzene acts as a substituent it is called
phenyl group
when toluene acts as a substituent it is called _____
Benzyl group
polycyclic aromatic hydrocarbons examples
Napthalene
Anthracene
Tetracene (Napthacene)
Phenanthrene
Huckel’s criteria for aromaticity
Have only 2 p orbitals on each of its atoms
Ne planar or nearly planar, so that there is a continuous overlap or nearly continuous overlap of all 2 p orbitals of the ring
Have 2, 6, 10, 14, 18, or so forth pi electrons in the cyclic arrangement of 2 p orbitals (4n+2)
what is the hybridization of carbons in benzene
sp2
How many pi electrons does benzene have
6
True or false: Pi electrons can be found in single bonds
False
heterocyclic aromatic compounds
Furan
Pyrrole
Imidazole
Indole
Purine