Answer to Question #130924 in Organic Chemistry for Nasrin

Question

How to name Alkenes?

Answer 1

There are some basic rules for naming alkenes:

• The suffix -ene is added to the alkyl root name (e.g. ethene, propene).
• Both carbon atoms involved in the double bond must be included when choosing the longest chain for the alkyl root name.
• The root chain is numbered from the end nearest to the carbon atom of a double bond. If the double bond is in the center of the chain, the numbering begins according to the nearest substituent rule.
• The double bond locator refers to the smaller of the two numbers designating the carbon atoms of the double bond.
• Compounds with more than one double bond are named as -diene, -triene etc., and the locator number is assigned for each double bond (e.g. 1,3 - butadiene).