Chapter 12, Problem 12.22P

Interpretation Introduction

(a)

Interpretation: The product formed when given alkyne is treated with ${\text{O}}_{\text{3}}$ followed by ${\text{H}}_{\text{2}}\text{O}$ is to be drawn.

Concept introduction: In presence of ozone and ${\text{H}}_{\text{2}}\text{O}$, oxidative cleavage occurs in alkynes. In oxidative cleavage both the sigma and pi bonds of the alkyne is broken. In case of terminal alkynes, carboxylic acid and carbon dioxide is formed while in case of internal alkynes, only carboxylic acids are formed.

Interpretation Introduction

(b)

Interpretation: The product formed when given alkyne is treated with ${\text{O}}_{\text{3}}$ followed by ${\text{H}}_{\text{2}}\text{O}$ is to be drawn.

Concept introduction: In presence of ozone and ${\text{H}}_{\text{2}}\text{O}$, oxidative cleavage occurs in alkynes. In oxidative cleavage both the sigma and pi bonds of the alkyne is broken. In case of terminal alkynes, carboxylic acid and carbon dioxide is formed while in case of internal alkynes, only carboxylic acids are formed.

Interpretation Introduction

(c)

Interpretation: The product formed when given alkyne is treated with ${\text{O}}_{\text{3}}$ followed by ${\text{H}}_{\text{2}}\text{O}$ is to be drawn.

Concept introduction: In presence of ozone and ${\text{H}}_{\text{2}}\text{O}$, oxidative cleavage occurs in alkynes. In oxidative cleavage both the sigma and pi bonds of the alkyne is broken. In case of terminal alkynes, carboxylic acid and carbon dioxide is formed while in case of internal alkynes, only carboxylic acids are formed.