2,3-Dichlorobutadiene Explained

2,3-Dichlorobutadiene is a chlorinated derivative of butadiene. This colorless liquid is prone to polymerization, more so than 2-chlorobutadiene. It is used to produce specialized neoprene rubbers.

It can be prepared by the copper-catalyzed isomerization of dichlorobutynes. Alternatively dehydrochlorination of 2,3,4-trichloro-1-butene:

CH₂=C(Cl)CH(Cl)CH₂Cl + NaOH → CH₂=C(Cl)C(Cl)=CH₂ + NaCl + H₂O

2,3-Dichlorobutadiene is a precursor to 2,3-diarylbutadienes.^[1]

References

1. Bulletin of the Chemical Society of Japan. Utilization of Industrially Available 2,3-Dichloro-1,3-butadiene for Direct Synthesis of 2,3-Diaryl-1,3-butadienes. 2006. 79. 498–500. Yamamoto Takakazu . Yasuda Takuma . Kobayashi Kazuaki . Yamaguchi Isao . Koizumi Take-aki . Ishii Daisuke . Nakagawa Masaru . Mashiko Yoshihiro . Shimizu Norihiro . 3. 3 . 10.1246/bcsj.79.498.