The addition of bromine to cyclopentene provides evidence for bromonium ion immediate in bromine addition. It follows ionic mechanism. When cyclopentene reacts with bromine in presence of CCl_4 anti addition occurs and gives trans isomer so addition of halogen to an alkene is a stereospecific reaction. cis alkene on addition with halogen gives racemic mixture and trans álkene on addition may give meso products. trans-2-butene on reaction with Br_2 in C Cl_4 forms mainly

The addition of bromine to cyclopentene provides evidence for bromoniu

1.	The addition of bromine to cyclopentene provides evidence for bromonium ion immediate in bromine addition. It follows ionic mechanism. When cyclopentene reacts with bromine in presence of CCl_4 anti addition occurs and gives trans isomer so addition of halogen to an alkene is a stereospecific reaction. cis alkene on addition with halogen gives racemic mixture and trans álkene on addition may give meso products. trans-2-butene on reaction with Br_2 in C Cl_4 forms mainly
Answer» `+-2,3-` DIBROMOBUTANE `+2, 3-`dibromobutane `-2,3-`dibromobutane Meso 2, 3-dibromobutane Answer :D