phc112 lec 3

Xylenes are classified as

• nitrobenzenes

• arenes

• halogenated benzenes

One of the major draw backs of friedel-craft alkylation

• rearrangement

• oxidation

• deactivation

Arenes can be prepared efficiently through

• gringard and Friedel craft acylation

• Friedel craft alkylation

• oxidation

Oxidation of arenes takes place on

• both aromatic and benzylic carbons

• aromatic carbons

• benzylic carbons only

Alkyl benzenes with tertiary substitution can be oxidised

• True

• False

Nitration of arenes is a reversible reaction

• True

• False

Can be used to prepare pure ortho-isomers

• halogenation

• nitration

• sulphonation