question_answer

 \[{{R}_{1}}\]and \[{{R}_{2}}\] are

A) Cold alkaline \[KMn{{O}_{4}},Os{{O}_{4}}/{{H}_{2}}{{O}_{2}}\]

B) Cold alkaline \[KMn{{O}_{4}},\]\[HC{{O}_{3}}H\] and \[{{H}_{3}}{{O}^{+}}\]

C) Cold alkaline \[KMn{{O}_{4}}.\]\[{{C}_{6}}{{H}_{5}}C{{O}_{3}}H\]

D) \[{{C}_{6}}{{H}_{5}}C{{O}_{3}}H,\,HC{{O}_{3}}H\]

Correct Answer: B

Solution :

[b] Syn addition with Baeyer's reagent, so cis will give meso compound however peroxy acid in anti-addition gives enantiomer. (Racemic mixture)