Question

Give structure and IUPAC name of the tert- pentyl.

Answer 1

Rules for Naming Hydrocarbons:-

Rule-I Selection of the longest carbon chain.

Rule-II Numbering the longest chain: Longest chain is numbered starting from a terminal carbon. Numbering is done in such a way that the lowest possible number is given to the side chain or a functional group.

Rule-III Writing names of branched, saturated hydrocarbons, locants are written first in alphabetical order followed by name of parent chain.

Rule-IV Some common names are retained in $IUPAC$ system for unsubstituted hydrocarbon only.

The IUPAC name of "tert-pentyl" is $2-methylbutan-2-yl$ or $1,1-dimethylpropyl$

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