Polyhalogenoallenes. Part VI. Some addition reactions of perfluoropenta-1,2-diene
作者:R. E. Banks、A. Braithwaite、R. N. Haszeldine、D. R. Taylor
DOI:10.1039/j39690000454
日期:——
Perfluoropenta-1,2-diene is inert towards chlorine, hydrogen chloride, and hydrogen bromide at room temperature in the dark, but combines quantitatively with anhydrous hydrogen fluoride under these conditions to give cis- and trans-2H-nonfluoropent-2-ene. The latter is also obtained by treatment of perfluoropenta-1,2-diene with caesium fluoride in formamide; reaction of the diene with caesium fluoride
全氟戊1,2-二烯在黑暗中于室温下对氯,氯化氢和溴化氢呈惰性,但在这些条件下与无水氟化氢定量结合,生成顺式和反式-2 H-非氟戊-2-烯。后者也可以通过用氟化铯在甲酰胺中处理全氟戊1,2-二烯来获得。二烯与单独的氟化铯的反应提供了全氟戊-2-炔。无水甲醇容易攻击全氟戊1,2-二烯,得到反式-2 H-八氟-1-甲氧基戊-2-烯和七氟-1-甲氧基戊-2-炔。全氟戊1,2-二烯的光化学加氢溴化反应得到3 H -2-溴-八氟戊-1-烯和1 HH -2-溴-八氟戊-2-烯(可能同时是顺式和反式异构体),同时用过量氯进行光化学氯化,得到1,2,2,3-四氯-八氟-正戊烷。给出了反应产物的核磁共振谱,并讨论了可能的反应机理。