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Consider all possible isomeric ketones, ...

Consider all possible isomeric ketones, including stereoisomers of MW = 100. All these isomers are independently reacted with `NaBH_4` (Stereoisomers are also reacted seperately). The total number of ketones that give a racemic product(s) is…......

A

4

B

5

C

6

D

3

Text Solution

Verified by Experts

The correct Answer is:
5
The possible ketones with mol.wt.100 (`C_6H_(12)O`) are as follows. Out of these, the total number of ketones that give a racemic product(s) is 5. Their structure are:
`CH_3 -CH_2-CH_2-CH_2-overset(O)overset(||)C -CH_3 , CH_3-CH_2 -CH_2- overset(O)overset(||)C-CH_2-CH_3` ,
`CH_3 -underset(CH_3)underset(|)overset(CH_3)overset(|)C -overset(O)overset(||)C-CH_3, CH_3 overset(CH_3)overset(|"*")(CH)-COCH_2CH_3, CH_3 -overset("*")CH(CH_3) CH_2COCH_3`
Following ketone does not give racemic product.
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