Question

What is the major organic product obtained from the following reaction?

What is the major organic product obtained from the following reaction? CH3 Br, CH2 HO CHE HO CHz Br. CHE Р JOH ОН Br Brz H20 AWN +

Answer 1

To what is the major product obtained from reaction a following sa The given cycloalkene reactant when reacts with Bromine in the presence of water gives "antha stereometerse product which is "halshydain." So, the correct answer to above question is ophion 4. The Mechanism for the reaction is as follows: Step & The double bond of cycloalkene reacts with one I Bronine atom and expels the other bromine atom l and a boems. cyclic 'brominium ion. 1. Methylcyclohexene cyclic brominium fon

Step. 2: Before the other bromine atom attacks the cyklic bominium ion, the tertiary (80) carbon alon in cyclic brominium ion reacts with water module. (since 3° is more stable than 20% Step - After the water molecule forms bond at z carbon alom another water mole celle reakts with hydrogen atom to form halshydain as majos product of reaction. Ha Ha OM CHE Halohydin majd mina product produs Hence, option a as correct answer options and 3 are not aut-addition products ....... they are incorrect and option 2 shows beomine addition at methyt substinite pohich is unstable.