Question

The systematic (IUPAC) name of tertiary butyl chloride is:

• A. t-Butyl-chloride
• B. tert-Butyl-chloride
• C. 1-Chloro-3-methylpropane
• D. 2-Chloro-2-methyl propane

Answer 1

The correct option is D

2-Chloro-2-methyl propane

The given compound tertiary butyl chloride is

it is numbered as shown

The longest chain clearly includes 3 carbon atoms

$\Rightarrow$ wood root =prop

primary suffix=ane

Secondary prefix=2-chloro,2-methyl

Hence the name (systematic IUPAC) of given compound is;

(d) 2-Chloro-2-methyl propane

Note: both

(a) t-Butylchlorideand (b) tert-Butylchloride are accepted IUPAC names.

They are NOT SYSTEMATIC IUPAC names.