Which of the following compounds forms isopropyl cyanide?

Step-by-step solution

Isopropyl cyanide has the structure CH ₃ -CH(CN)-CH ₃ . To obtain isopropyl cyanide, the starting alkyl halide must contain an isopropyl group, which is CH ₃ -CH(X)-CH ₃ . When an alkyl halide reacts with alcoholic KCN, the major product is an alkyl cyanide (nitrile). This is because KCN is predominantly ionic, providing free cyanide ions ( CN ⁻ ) in solution. Attack occurs preferentially through the carbon atom as the C-C bond formed is stronger than a C-N bond. When an alkyl halide reacts with alcoholic AgCN, the