The maximum number of isomers (including stereoisorners) that are possible on monochlorination otthe following compound, is :
A
8
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B
6
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C
3
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D
9
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Solution
The correct option is A 8 Isomers of 3-methylpentane are four and stereoisomers are eight. 1-Chloro-3-methyl pentane-43% 2-Chloro-3-methyl pentane-29%(2 stereocenters and chiral molecule) 3-Chloro-3-methyl pentane-7.1% 1-Chloro-2-ethyl butane-21%. Two stereoisomers give four enantiomers or two pairs. Each of the molecule in either pair of enantiomers is a diastereomer of either molecule in other pair. So in total 8 isomers are possible.