Consider the following reactions: (A) 1-butene + HBr (B) Acetone + HCN (C) Acetaldehyde + CH ₃ MgBr H ₃ O ^+ (D) Propene + Cl ₂/ H ₂ O (E) Butanone + LiAlH ₄ H ₂ O (F) Cyclopentene + Br ₂/ CCl ₄ Find the total number of reactions that produce a major organic product containing at least one chiral carbon atom.

Step-by-step solution

(A) 1-butene + HBr 2-bromobutane. The C2 carbon is bonded to H , Br , - CH ₃ , and - CH ₂ CH ₃ . It is chiral. (B) Acetone + HCN Acetone cyanohydrin. The central carbon is bonded to two identical - CH ₃ groups. It is achiral. (C) Acetaldehyde + CH ₃ MgBr followed by hydrolysis 2-propanol. The C2 carbon is bonded to two identical - CH ₃ groups. It is achiral. (D) Propene + Cl ₂/ H ₂ O 1-chloro-2-propanol. The C2 carbon is bonded to H , OH , - CH ₃ , and - CH ₂ Cl . It is chiral. (E) Butanone + LiAlH ₄ followed by hy