The IUPAC name of Options: A . &nbsp6-Ethyl-3,3-dimethylcyclohex-1-ene B . &nbsp3-Ethyl-6,6-dimethylcyclohex-1-ene C . &nbspBoth a and b are accepted D . &nbspNeither a nor b

Answer: Option A : A In this compound, the parent chain is the one containing cycliccarbon. Now, we number in the following way. Because more substituted will get the lower number. → ethyl group at C 5 → Two methyl group at C 3 Therefore, it will be 6-Ethyl-3-3-Dimethylcyclohex-1-ene not 3,3-Dimethyl-6-ethylcyclohex-1-ene Because we use alphabetical order and Di- is not considered for the alphabetical order.

The IUPAC name of

Question

The IUPAC name of

Options:

A . 6-Ethyl-3,3-dimethylcyclohex-1-ene

B . 3-Ethyl-6,6-dimethylcyclohex-1-ene

C . Both a and b are accepted

D . Neither a nor b

Answer: Option A
:
A
In this compound, the parent chain is the one containing cycliccarbon.
Now, we number in the following way.

Because more substituted will get the lower number.

\to

ethyl group at

C_{5}

\to

Two methyl group at

C_{3}

Therefore, it will be
6-Ethyl-3-3-Dimethylcyclohex-1-ene
not
3,3-Dimethyl-6-ethylcyclohex-1-ene
Because we use alphabetical order and Di- is not considered for the alphabetical order.

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