Question

Which statement is correct for the conversion of $ROH$ to $RX$ by reagents (A) $\left( SOCl _{2}, PBr _{3}, PCl _{3}, PI _{3}\right.$, and $\left.TsCl \right)$ compared to using $HX$?

• A. No rearrangement occurs with predictable stereochemistry by reagents $(A)$
• B. Reagents $(A)$ are not useful for $3^{\circ}$ alcohols, while $HX$ reacts easily with $3^{\circ}$ alcohols involving no rearrangement.
• C. Reagents $(A)$ must be used in anhydrous conditions because all react vigorously with $H _{2} O$ and they produce harmful gases ( $SO _{2}, HCl , HBr$, and $\left.HI \right)$.
• D. All.

Answer 1

Answer: (D)

Correct answer is (d) All.