Question

Which of the following is least likely to form a Grignard reagent?

• A. $C{H}_{3}Cl$
• B. $P{h}_{3}CCl$
• C. $E{t}_{3}CCl$
• D. $C{H}_2=CHC{H}_{2}Cl$

Answer 1

Answer: (C)

$E{t}_{3}CCl$

Reaction of Grignard reagent with alkyl halide mainly depend upon stability of carbanion. if carbanion stability is more then it is more likely to form a grignard reagent. Tertiary carbanion is less stable than other carbanions. So, it is least likely to form a grignard reagent.