Question

Iupac name
What is the iupac name of this compound

Answer 1

Answer:

IUPAC name is 3 - butyl - 4 - ethyl - hept - 6 - ene - 1- yne .

Explanation:

We have bond line structure.

• We will write it's condensed formula for writing IUPAC name .

It's Condensed structural formula is given in attachment.

Steps how we have write the IUPAC name :

Step 1 :

We have selected such a longest carbon chain as parent chain which contains maximum number of multiple bonds. [Refer to the attachment]

Step 2 :

We have done the numbering of chain from that end, from which multiple bonds come first followed by side chain. [Refer to the attachment]

Step 3 :

We know rule for writing IUPAC name :

Prefixes (for side chain) + Root word (For parent chains) + Primary suffixes (-ane, -ene and -yne)

Here,

There is one complex side chain on 3rd carbon atom. There are four carbon atoms in complex side chain. So Root word for this will be 'But' and it is a side chain. So, IUPAC name for this complex side chain is Butyl .

And, there is one more side chain - ethyl on 4th carbon atom.

So,

Prefix is 3 - butyl - 4 - ethyl

There are 7 carbon atoms.

So, Root word is hept .

And,

There is double bond on 6th carbon atom and triple bond on 1st carbon atom.

So, P. suffix is 6 - ene - 1 - yne .

Add them :

→ 3 - butyl - 4 - ethyl - hept - 6 - ene - 1- yne

Thus,

IUPAC name is 3 - butyl - 4 - ethyl - hept - 6 - ene - 1- yne .

Answer 2

Answer:

5-Butyl 4-Ethyl Hept-1-ene-6-yne

Explanation:

1. The main carbon chain is 7 carbons long and we have to include both the double bonds in the main chain.
2. There will be a butyl group at 5th carbon and an ethyl group at 4th carbon.
3. Double bonds have a higher priority in naming of 2 bonds are present at terminal positions.
4. Thus the name will be 5-Butyl 4-Ethyl Hept-1-ene-6-yne