Question
Identify the product obtained when Grignard reagent reacts with alkyl cyanide followed by acid hydrolysis.
MHT CET
Chemistry
Aldehydes and Ketones
2026
MHT CET 2026 (11 April Shift 1)
MHT CET Chemistry Question (2026) — Solution
Options
- A. an aldehyde
- B. a ketone
- C. a primary alcohol
- D. a secondary alcohol
Answer
B. a ketone
Step-by-step solution
Grignard reagents (R'MgX) react with alkyl cyanides (R-C N) to form an imine salt intermediate. R-C N + R'MgX R-C(R')=NMgX Upon acid hydrolysis, the imine salt is converted into a ketone. R-C(R')=NMgX + H_3O^+ R-C(=O)-R' + NH_3 + Mg(OH)X Thus, the final product obtained is a ketone. Answer: a ketone
Related: Chemistry — Aldehydes and Ketones · All PYQ Banks