Question

Select the correct lUPAC name for the following cycloalkane: 1, 3-diethyl-2-iodocyclohexane 2-iodo-1, 3-dipropylcyclohexane 1-iodo-2, 6-dipropylcyclohexane 2, 6-diethy-1-iodocyclohexane

Answer 1

Numbering of the carbons of the cycloalkane should be done in such a way that carbons with functional groups or alkyl groups get the lowest possible numbers. (NB: This can be ensured by just adding the numbers corresponding to the substituents. For example in the third option, 1-iodo-2,6- dipropyl cyclohexane, by adding the numbers corresponding to the carbon atom, we will get 1+2+6=8 and in the second option 2-iodo-1,3-dipropyl cyclohexane, it is 2+1+3=6). Also functional groups are arranged in the alphabetical order (Here, ‘i’ of iodo comes before the ‘p’ of propyl)

Select the correct IUPAC name for the following cycloalkane: 3 O 1,3-diethyl-2-iodocyclohexane 2-iodo-1,3-dipropylcyclohexane 1-iodo-2,6-dipropylcyclohexane O 2,6-diethy-1-iodocyclohexane