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The addtion of Br(3) to trans-2-butene p...

The addtion of `Br_(3)` to trans-2-butene produces

A

(+)2,3-dibromobutane

B

(-)2,3=dibromobutane

C

rac-2,3-dibromobutane

D

meso-2,3-dibromobutane

Text Solution

Verified by Experts

The correct Answer is:
D
`Br_(2)` gives anti addtion.
Trans alkene `to`Antiaddition `to` Erythro product.
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A : Addition of Br_(2) in trans-but-2-ene in the presence of CCI_(4) gives meso form. R : The reaction occurs through anti addition.

Addition of Br_(2) to cis-2-butene would give a product which is:

Knowledge Check

  • Addition of Br_(2) to trans-2-butene would give a product which is:

    A
    achiral
    B
    racemic
    C
    meso
    D
    Optically active

  • Addition of Br_2 to cis-2-butene gives

    A
    (+)-2,3-dibromobutane only
    B
    (-)-2,3-dibromobutane only
    C
    (+)-2,3-dibromobutane
    D
    meso-2.3-dibromobutane.

  • Assertion: Addition of Br_(2) to trans but-2-ene yields meso- 2,3-dibromobutane. Reason : Bromine addition to an alkene is an electrophilic addition reaction.

    A
    Assertion and reason both are correct statements and reason is correct explanation for assertion.
    B
    Assertion and reason both are correct statements but reason is not correct explanation for assertion
    C
    Assertion is correct statement but reason is wrong statement.
    D
    Assertion is wrong statement but reason is correct statement.

    • Similar Questions

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    Addition of bromine to trans-2-butene yields meso-2,3-dibromobutane. Bromine addition is an electrophilic addition.

    Statement 1: Addition of bromine to trans-2-butene yields meso-2,3-dibromobutane. Statement 2: Bromine addition to an alkene is an electrophilic addition.

    trans-2-Butene +Br_(2) gives:

    Assertion:Addition of bromine to trans-2-butene yields meso-2, 3 -dibromobutane. Reason:Addition of bromine to an alkene is an electrophilic addition.

    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

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