Consider all possible isomeric ketones, including stereoisomers of MW = 100. All these isomers are independently reacted with N a B H 4 (NOTE: stereoisomers are also reacted separately). The total number of ketones that give a racemic product(s) is/are

Step-by-step solution

The general formula of isomeric ketone having molecular mass 100 is C 6 H 12 O [ 6 x 12 + 12 x 1 + 16 ] . 1] Will not give a racemic mixture on reduction with N a B H 4 . this ketone have chiral center will give diastereoisomer. 2] Will give a racemic mixture on reduction with N a B H 4 3] Will give a racemic mixture on reduction with N a B H 4 4] Will give a racemic mixture on reduction with N a B H 4 5] Will give a racemic mixture on reduction with N a B H 4 6] Will give a racemic mixture on reduction with N a B