JEE Main Chemistry question
A polycyclic diene (a hydrindane/decalin-type bicyclic system bearing two ring double bonds, numbered 1–6) is reacted with one mole of HBr to give an addition compound. At which numbered location will bromine form a bond?
Answer: 5
Solution
Addition of HBr to a diene follows Markownikoff's rule, with the proton adding to the alkene carbon bearing more hydrogens and bromine ending up at the carbon that gives the more stable (more substituted, and here also
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