Question

rules for nomenclature of organic compound having fuctional group explain with example

Answer 1

Naming the compound
1) Always count the longest number of Carbon chain and name it with the number of carbons.( a 3 carbon compound will have the name propane)
2) when a functional group is present, indicate it with it's prefix or suffix.(only Halo group is prefixed. all the other functional groups are suffixed)
3) when the functional group is suffixed, the last letter of the name will be deleted of the carbon chain and appropriate suffix is added.( for propane, if alcohol functional group is present, then it becomes propanol)
4) if the carbon chain is unsaturated, delete the final 'ane' from the name and add 'ene' or 'yne'.

Answer 2

The longest continuous chain containing the carbon atoms involved in the multiple bond, functional groups or substituents is selected as a parent chain.

While writing the name of the alkene or alkyne, the suffix -ane of the corresponding alkane is replaced by -ene or -yne respectively, same for functional group.