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What is the correct IUPAC name of the co...

What is the correct `IUPAC` name of the compound ?

A

`3-`cyano`-2,5-`dimethyl heptanedinitrile

B

`2-`methyl hexane `-1,4,5-`tricarbonitrile

C

`2,5-`dimethyl`-1,3,7-`heptanedinitrile

D

`5-`cyano`-3,6-`dimethyl hepttanedinitrile

Text Solution

Verified by Experts

The correct Answer is:
B
When more than two carbon containing principal functional groups lies directly on a single chain, longest chain containing maximum number of such groups becomes parent chain. Priority is given in numbering.

Here, suffix for the whole `-CN, i.e,` carbonitrile would be used. Hence, `2-`methyl hexane `-1,4,5-`tricarbonitrile.
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