Vinyl Acetylene

l-buten-3-yne (HC≡C—CH=CH₂), the simplest unsaturated hydrocarbon containing double and triple carbon-carbon bonds. Colorless gas. Boiling point, 5.5° C; density at 0° C, 0.6867 g/cm³.

Vinyl acetylene is obtained by dimerization of acetylene in the presence of copper salts in an ammonium chloride solution (50°-100° C):

2CH≡CH→CH≡C—CH=CH₂

Vinyl acetylene is very reactive; the hydrogen atom of the terminal CH group can be replaced by a metal, a halogen (MgX, where X is a halogen), and so on. The most important reaction of vinyl acetylene is with HCl, yielding chloroprene, CH₂=CCl—CH=CH₂, which is used to make chloroprene rubbers. Vinyl acetylene oxidizes and polymerizes readily.

单词	vinyl acetylene
释义	Vinyl Acetylene Vinyl Acetylene l-buten-3-yne (HC≡C—CH=CH₂), the simplest unsaturated hydrocarbon containing double and triple carbon-carbon bonds. Colorless gas. Boiling point, 5.5° C; density at 0° C, 0.6867 g/cm³. Vinyl acetylene is obtained by dimerization of acetylene in the presence of copper salts in an ammonium chloride solution (50°-100° C): 2CH≡CH→CH≡C—CH=CH₂ Vinyl acetylene is very reactive; the hydrogen atom of the terminal CH group can be replaced by a metal, a halogen (MgX, where X is a halogen), and so on. The most important reaction of vinyl acetylene is with HCl, yielding chloroprene, CH₂=CCl—CH=CH₂, which is used to make chloroprene rubbers. Vinyl acetylene oxidizes and polymerizes readily.
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