Synthesis of aromatics
Not what you're looking for?
1. On the basis of electronic theory, explain the following observations:
a. The -N(CH3)2 group is an ortho, para director, and strongly activates the ring, whereas the -N(CH3)3 group is a meta director and deactivates the ring toward electrophilic substitution.
b. The -NO2 group is a meta director, and its presence on the ring makes electrophilic substitution more difficult as compared with the -NH2 group, which is an ortho, para director.
2. Devise a suitable reaction sequence in which each of the following compounds can be prepared from benzene in good yield. Assume ortho and para isomers are separate from one another, and use any other reagents you desire.
a. p-Bromoisopropylbenzene
b. m-Nitrobenzenesulfonic acid
c. p-Tert-butylbenzenesulfonic acid
d. m-Xylene
Purchase this Solution
Solution Summary
The directing effects of substituent groups are explained. A few aromatic compounds are also prepared.
Solution Preview
The N(CH3)2 group is an electron donating group. Hence the aromatic ring becomes more electron rich and a better nucleophile. On the other hand the +N(CH3)3 is an electron withdrawing ...
Purchase this Solution
Free BrainMass Quizzes
Functional groups in Organic Chemistry
You will be tested on the names of functional groups in Organic Chemistry. It is very important to know the functional groups to understand Organic reactions.
Organic Chemistry Naming: Alkanes
This is a quiz which is designed to assist students with learning the nomenclature used to identify organic compounds. This quiz focuses on the organic compounds called Alkanes.
General Chemistry - Classification of Matter
This test will assess your knowledge on the classification of matter which includes elements, compounds and mixtures.
Thermochemistry
The quiz helps in revising basic concepts about thermochemistry.