Question

In: Chemistry

What is the expected aromatic hydrocarbon reactivity of these compounds and why ? (which is the...

What is the expected aromatic hydrocarbon reactivity of these compounds and why ? (which is the fastest and which is the slowest and why?) a bromine solution in acetic acid was added to these compound.

Toluene , Acetanilide , Benzhydrol, Anisole, Diphenyl ether

Solutions

Expert Solution

Benzene rings may be joined together (fused) to give larger polycyclic aromatic compounds. A few examples are drawn below, together with the approved numbering scheme for substituted derivatives. The peripheral carbon atoms (numbered in all but the last three examples) are all bonded to hydrogen atoms. Unlike benzene, all the C-C bond lengths in these fused ring aromatics are not the same, and there is some localization of the pi-electrons. For a discussion of this characteristic in cases of naphthalene and phenanthrene click on their formulas.
The six benzene rings in coronene are fused in a planar ring; whereas the six rings in hexahelicene are not joined in a larger ring, but assume a helical turn, due to the crowding together of the terminal ring atoms. This helical configuration renders the hexahelicene molecule chiral, and it has been resolved into stable enantiomers having specific rotations of 3700


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