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JEE Main Chemistry question

ChemistryAlcohols, Phenols and EthersJEE Main

A complex cyclic structure bearing two phenyl substituents and two hydroxyl groups, with an internal diene system, is treated with hydroboration–oxidation ( then ). The total number of chiral carbons in the major product is

Answer: 7

Solution

Anti-Markovnikov hydroboration–oxidation adds across the diene system of this heavily substituted ring in a regio- and stereo-selective manner, and combined with the stereocentres

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Question ID VK-149045