# Question #72ffd

Nov 3, 2016

Here's the answer for the first one to get you started!

#### Explanation:

cis-1-chloropropene has the following skeletal structure -

The condensed structure is $C {H}_{3} C H = C H C l$

It's a case of systematically working through the name and drawing the structure as you go, starting with the long carbon chain (eg, heptane, butane) and fitting in the double bonds and the substituents. It is easy, though, to make a simple mistake but try giving it a go.

"ene" means there is a double bond in the molecule - "ane" means there isn't. "diene" means two double bonds. The numbers show where the substituents are on the carbon chain or else where the double bonds are.

Benzene has an aromatic ring structure which you will have been shown. "m" means meta, which means that the two substituents are in positions 1 and 3 of the benzene ring.