A mechanism for the inter-conversion of 1,2 adduct and 1,4 adduct formed by the reaction of HBr with 1,3-butadiene which are in equilibrium at 40°C is to be proposed. Concept introduction: The mechanism of the interconversion required takes place through i) ionization of the halide to yield an allyl carbocation b) resonance delocalization to yield a different allyl carbocation c) attack of bromide ion on both carbocations. To propose: A mechanism for the inter-conversion of 1,2 adduct and 1,4 adduct formed by the reaction of HBr with 1,3-butadiene which are in equilibrium at 40°C.

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Chapter 14.3, Problem 5P

Interpretation Introduction

Interpretation:

A mechanism for the inter-conversion of 1,2 adduct and 1,4 adduct formed by the reaction of HBr with 1,3-butadiene which are in equilibrium at 40°C is to be proposed.

Concept introduction:

The mechanism of the interconversion required takes place through i) ionization of the halide to yield an allyl carbocation b) resonance delocalization to yield a different allyl carbocation c) attack of bromide ion on both carbocations.

To propose:

A mechanism for the inter-conversion of 1,2 adduct and 1,4 adduct formed by the reaction of HBr with 1,3-butadiene which are in equilibrium at 40°C.

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