Question

Draw the structure of the alkyne that reacts with 2 equivalents of Br2 to make the following product:

Draw the structure of the alkyne that reacts with 2 equivalents of Br2 to make the following product:

Answer 1

Concepts and reason

Alkynes involve in electrophilic addition relations. Where, alkyne acts as nucleophile and electrophile attacks on, one of the carbon of a triple bond. Draw the structure of the alkyne, that reacts with two equivalents of dibromine to produce the tetrabromo substituted alkane.

Fundamentals

Alkyne reacts with two moles of dibromine ${\rm{(B}}{{\rm{r}}_{\rm{2}}})$ to form tetrabromo substituted alkane.

Two equivalents of ${\rm{(B}}{{\rm{r}}_{\rm{2}}})$ means, four bromine atoms.

The structure of 2,2,3,3-tetrabromopentane is,

The reaction is,

Ans:

Thus, the structure of alkyne is,