answer question 12.15 and 12.16

PRACTICE the skill 12.15 Show how a Grignard reaction can be used to make each of the following compounds, starting with an aldehyde or ketone starting material: (a) (b) (d) (e) 12.16 Two of the compounds from Problem 12.15 can be prepared from the reaction between a Grignard reagent and an ester. Identify those two compounds and explain why the other four compounds cannot be prepared from an ester