What is the major product expected from the following reaction?
A
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B
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C
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D
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Solution
The correct option is B
i.e., (b) option since, KMnO4 cold/alk. is a syn dihydroxylating agent. The reaction proceeds with “syn/cis” stereochemistry of the alkene, meaning that the two alcohols end up on the same side of the alkene.