Question

a) provide the names for the following organic compounds:
a) ch3c=chch=cchch3 with ch2ch3 on the first - double - bonded carbon, br on the second - double - bonded carbon and ch2ch(ch3)2 attached to the second - double - bonded carbon. name:
b) a cyclic compound with a double bond, ch2ch2ch3 attached to one of the double - bonded carbons, f attached to another double - bonded carbon and ch3 attached to a non - double - bonded carbon. name:
c) a compound with a benzene ring, ch≡ccch(cl)ch(br)ch(ch3)ch2ch3 attached to the benzene ring. name:
d) a compound with a benzene ring, ch3c(ch3)2 attached to one carbon of the benzene ring and i attached to another carbon of the benzene ring. name:

Explanation:

Step1: Identify the parent - chain and functional groups for a)

The parent - chain has 8 carbon atoms with two double bonds and a bromine atom. The numbering is done to give the double bonds the lowest numbers.
The compound is 6 - bromo - 2 - ethyl - 3,5 - octadiene.

Step2: Identify the parent - chain and functional groups for b)

The parent is a cyclopentene ring. There is a fluorine atom and a propyl group attached. The numbering starts from the double - bonded carbon closest to the substituents.
The compound is 4 - fluoro - 2 - methyl - 1 - propylcyclopentene.

Step3: Identify the parent - chain and functional groups for c)

The parent chain contains 8 carbon atoms with two triple bonds, a chlorine atom, and a bromine atom. There is also a phenyl group attached. The numbering is done to give the triple bonds the lowest numbers.
The compound is 5 - bromo - 6 - chloro - 2 - (phenyl) - 3,7 - decadiyne.

Step4: Identify the parent - chain and functional groups for d)

The parent is a benzene ring. There is an iodine atom and a tert - butyl group attached. The numbering starts from the carbon with the iodine atom.
The compound is 2 - (tert - butyl) - 1 - iodobenzene.

Answer:

a) 6 - bromo - 2 - ethyl - 3,5 - octadiene
b) 4 - fluoro - 2 - methyl - 1 - propylcyclopentene
c) 5 - bromo - 6 - chloro - 2 - (phenyl) - 3,7 - decadiyne
d) 2 - (tert - butyl) - 1 - iodobenzene