Question

Name these structures

Br CI 12 Br Br Ci Br Cl

Answer 1

3-(1-bromopropyl)-1,4-dimethylcyclohex-1-ene 12 10 (E)-(3,7-dibromo-4-(chloromethyl)-3,5,10-trimethyldodec-8-en-6-yl)cyclopentane 10 9 Cl 65 143 (E)-(7-bromo-9-chloro-4,8-diethyl-1,3-diiodo- 3,5,6-trimethyldec-7-en-2-yl)cyclobutane 10 (Z)-1-chloro-2-(5-ethyl-4-fluoro-9-iodo- 3,6-dimethyldec-6-en-2-yl)cyclohexane

E and Z denotes the stereochemistry of the double bonds

The IUPAC name of the any compound contains 3 parts prefix+ rootword +suffix Prefix any substitutents rootwordlongest chain containing most number of carbons if the chain contains 1 carbon 2 carbon eth 3 carbonprop meth carbon but 5 carbon pent 6 carbon hex and so on 7 carbon - hept 8 carbon oct 9 carbonnon Suffix - if the compound contains single bond (C-C) only then suffix 'ane double bonds (C-C) 'ene triple bonds 'yne For selecting prefix numbering, the substituents numbers has to be given in such way that the sum of the all substituents should be as less as possible For selecting rootword chain, the chain with more number of carbons has to be selected In all the given compounds alkanes are present, hence the suffix is 'ane' in all the four compound For all the compounds, blue coloured part of the name is prefix. red coloured part of the name is rootword and pink coloured part of the name is suffix