Chapter 9.10, Problem 11P

Interpretation Introduction

Interpretation:

The synthesis reactions of $\text{1,1-dichloroethane}$ from ethylene, vinyl chloride, and $\text{1,1-dibromoethane}$ are to be designed.

Concept introduction:

Addition of two molecules of hydrogen halide to an alkyne gives geminal dihalides.

Alkynes can be synthesized by dehydrohalogenation of alkyl halides or vicinal and geminal dihalides with a strong base like sodium amide.