Fullerene-Acetylene Molecular Scaffolding: Chemistry of 2-functionalized 1-ethynylated C60, oxidative homocoupling, hexakis-adduct formation, and attempted synthesis of C1242?
作者:Peter Timmerman、Lars E. Witschel、Fran�ois Diederich、Corinne Boudon、Jean-Paul Gisselbrecht、Maurice Gross
DOI:10.1002/hlca.19960790103
日期:1996.2.7
On the way to the fullerene-acetylene hybrid carbon allotropes 2 and 6, the oxidative homocoupling of the 2-functionalized 1-ethynylated C60 derivatives 11, 12, 14, and 15 was investigated. Under Glaser-Hay conditions, the two soluble dumbbell-shaped bisfullerenes 17 and 18, with two C60 moieties linked by a buta-1,3-diynediyl bridge, were formed in 52 and 82% yield, respectively (Scheme 2). Cyclic-voltammetric
的道路上的富勒烯乙炔混合碳同素异形体2和6中,2官能1-乙炔C的氧化自偶联60个衍生物11,12,14,和15进行了研究。在Glaser-Hay条件下,分别以52%和82%的产率形成了两个可溶性哑铃形的双富勒烯17和18,两个C 60部分通过buta-1,3-diynediyl桥连接在一起(方案2)。循环伏安测量表明,两个富勒烯球之间通过buta-1,3-diynediyl接头。的3,4,5,6-四氢-2的去除ħ -吡喃-2-基(THP)保护基团在18在80%的人产生高度不溶性哑铃19用甲醇中基团的2,2'-位置buta-1,3-diynediyl-bridged碳球。试图通过碱诱导的甲醛消除将19转化为全碳二价阴离子6(C)的尝试未成功,这可能是由于形成的醇盐的外切环化。对于2- [4-(三甲基甲硅烷基)buta-1,3-diyn-1-yl] [60]富勒烯-1-甲醇(21)(一种19的