Question

Show the mechanism for the following reaction conducted at - 5 degree C in CCl4: cyclohexene bromine yields a dibromocyclohexane Draw structures ? including charges and electrons ? and add curved arrows. Details count.

Show the mechanism for the following reaction conducted at ?5 ?C in CCl4: cyclohexene bromine yields a dibromocyclohexane Draw structures ? including charges and electrons ? and add curved arrows. Details count.

Answer 1

Concepts and reason

The concept to solve this problem is bromination of alkene.

Alkene reacts with bromine molecule and forms a bridged bromonium ion followed by the attack of bromide ion (nucleophile) gives dibromo product.

Fundamentals

The curved arrow shows the movement of the electron pair. Curved arrow is represented as:

The tail of the arrow begins at an electron pair and the head represents that moving of an electron pair.

The curved arrow representation for the formation of intermediate is as follows:

Here, the intermediate is bridged bromonium ion.

The formation of required compound is as follows:

Here, the dibromocyclohexane is formed in the product.

Ans:

The curved arrow representation for the formation of product is as follows:

The curved arrow representation for the formation of required product, dibromocyclohexane, is as follows: