Question

1) - Write structure of the following compounds:
A) 2-Chloro-3-methylpentane

2) - Write structure of the following compounds:
A) 1-Chloro-4-ethylcyclohexane

3) - Write structure of the following compounds:
C) 4-tert. Butyl-3-iodoheptane

4) - Write structure of the following compounds:
D) 1,4-Dibromobut-2-ene

5) - Write structure of the following compounds:
D) 1-Bromo-4-sec. butyl-2-methylbenzene.

Answer 1

1) - Parent chain

Here parent chain is pentane as word root is pent due to $5$ carbon atoms present in longest carbon chain.

Here primary suffix is 'ane', so it is an alkane.

Substituents on parent chain

At second carbon chloro substituent and at third carbon mrthyl substituent is present on parent chain.

Structure of $2-\text{Chloro}-3-\text{methylpentane}$

This can be drawn as below-


2) - Parent chain

Here parent chain is hexane as word root is 'hex' due to $6$ carbon atoms present in longest carbon chain.

And we could add prefix as 'cyclo', as it is in cyclic form.

Here primary suffix is 'ane', so it is an alkane.

Substituents on parent chain

At $1^{st}$ carbon, chloro and at $4^{th}$ carbon, ethyl substituent is present on parent chain.

Structure of $1-\text{Chloro-4-ethylcyclohexane}$

This acn be drawn as below-



3) - Parent chain
Here parent chain is heptane as word root is 'hept' due to $7$ carbon atoms present in longest carbon chain.
Here primary suffix is 'ane', so it is an alkane.

Substituents on parent chain
At $3^{rd}$ carbon, iodo substituent $\&$ at $4^{th}$ carbon, tert. Butyl substituent is present on parent chain.

$\text{Structure of ~4-tert. Butyl-3- iodoheptane}$

This can be drawn as below-


4) - Patent chain
Here parent chain is butane as its word root is 'but' due to $4$ carbon atoms present in longest carbon chain.
Here primary suffix is 'ene', so it is an alkene.

Substituents on parent chain
At $1^{st}$ carbon and $4^{th}$ carbon, two bromo substituents are present on parent chain.
So, we could add prefix as 'di' due to two same type of substituents present.

Structure of $1,4-\text{Dibromobut-2-ene}$
This can be drawn as below-



5) - Parent chain
Here parent molecule is benzene.

Substituents on parent chain
At $1^{st}$ carbon, bromo substituent, at $2^{nd}$ carbon methyl substituent and at $4^{th}$ carbon sec. butyl is present on parent chain.

Structure of $1-\text{Bromo-4-sec. butyl-2-methylbenzene}$

This can be drawn as below-