| 摘要 |
Vinyl compounds are obtained on passing acetylene into an aqueous catalyst solution of cuprous chloride and a soluble monoethanolamine salt, the hydrochloride being preferred. The presence of the amine salt allows of the use of higher concentrations of cuprous chloride. In strongly acidic solutions of hydrochloric or hydrobromic acid the corresponding vinyl halide is formed and in neutral solutions vinyl acetylene is obtained. In examples: (1) an approximately equimolecular mixture of acetylene and hydrogen chloride is passed at 80-85 DEG C. through a solution of cuprous chloride and monoethanolamine hydrochloride previously saturated with hydrochloric acid at 50 DEG C., vinyl chloride being obtained; and in (2) acetylene is passed at 80-85 DEG C. through a neutral solution of cuprous chloride and monoethanolamine hydrochloride to produce vinyl acetylene. |
