Question

How to name cycloalkanes with double bonds in side chains?

Answer 1

add the prefix -cyclo- and since there are double bonds it so alkene...hence
cyclo ethene
cyclo butene etc

Answer 2

Answer:

The smaller of the two numbers designating the carbon atoms of the double bond is used as the double bond locator. If more than one double bond is present the compound is named as a diene, triene or equivalent prefix indicating the number of double bonds, and each double bond is assigned a locator number.