unit (7) organic compounds

The word aromatic originally referred to the unpleasant odor characteristic to many ofthese substances, but this meaning is not in use anymore.Naming Benzene DerivativesWhen one or more hydrogen atoms of the benzene ring is replaced with other groups, thecompound is named as a derivative of benzene.Examples:CH 2 CH 3 Br ClNO 2ethylbenzenebromobenzene chlorobenzenenitrobenzeneThe IUPAC system retains the common names for the following:CH 3 OHNH 2COOHtoluene phenol aniline benzoic acidWorked Example 7-10Draw the structural formula for each of the following:a) 1,3-dichlorobenzeneb) 2,4,6-trinitrotoluene (TNT)c) 2-bromo-3,4-dichlorophenolSolutionClO 2 NCH 3NO 2OHBrClNO 2Cla) b)c)Cl7-18