Which stereoisomer ― cis− or trans−1−bromo−3−tert−butylcyclohexa ne ― will react faster in an e2 elimination reaction? select the single best answer.

cis-1-bromo-3-tert-butylcyclohexane will react faster in E2 elimination reaction.

Explanation: The two isomers are shown in the image attached.

E2 elimination reaction is known as the anti elimination reaction. For E2 elimination reaction, the leaving group 'X' should be in anti-coplanar arrangement to the atom.

Between the two isomers, cis-isomer is the one where leaving group 'Br' and H-atom on are in anti-position.

Hence, cis-isomer will react faster in E2- elimination reaction.

h let me think