Question

5. Nomenclature. Give the IUPAC name of the compound below; put your answer on the line below the compound. Remember that benzene compound may have common names as parent names - make sure you memorize the 6 from the lecture slides! b. а. Он ОН SH d. C. H2N н NH2 g. SH h NH2 6. What are the criteria for a compound to be classified as aromatic? List them below

Answer 1

Parent carbon chain is benzoic acid. Here ethyl group is substitutent at 2 nd carbon atom. YOH 2-ethylbenzoic acid Parent carbon chain is benzene. Here methyl group is substitutent at 2 nd carbon atom and fluorine group is substitutent at 1 st carbon atom. 315 6 1-fluoro-2-methylbenzene OH Parent carbon chain is phenol. Here mercapto group is substitutent at 3 rd carbon atom . 2 4 SH 3-mercaptophenol 46 Parent carbon chain is benzaldehyde. Here sec-butyl group is substitutent at 3 rd carbon atom . 11 H 3-(sec-butylbenzaldehyde 6 HON 12 Parent carbon chain is aniline. Here isopropoxy group is substitutent at 4 th carbon atom . 4-isopropoxyaniline Parent carbon chain is eth. Here aminophenyl group is substitutent at 1 st carbon atom and ketone is functional grop at first carbon atom. NH2 1-(4-aminophenylethan-1-one 2 N4 15 4 5 6 7 16 14 86 SH 9 6-benzyl-7-ethyl-4-methylnon-1-yne- 5-thiol 1-ethoxy-4-isopropyl-5-methyl-1-phenylhexan-3-amine

For a molecule to be aromatic i) it should have continuous conjugation (sp2 hybridized carbons) ii) it should follow Huckel's have 4n+2 i electrons rule. where n = 0,1,2,3 and so on.