Question

Give the reagent that would best accomplish the following transformation:

• A. $m-CPBA/H^{+}/H_{2}O$
• B. $KMn{O}_4/H_{2}O$
• C. $Os{O}_4/H_{2}S$
• D. All of these

Answer 1

Answer: (A)

$m-CPBA/H^{+}/H_{2}O$

(A) Epoxidation followed by hydrolysis using $m-CPBA/H^{+}/H_{2}O$ as in above mechanism gives trans diol as the final product.

(B) $KMn{O}_4/H_{2}O$ will give cis diol.

(C) $Os{O}_4/H_{2}S$ will give cis diol.

Thus, option (A) is correct.