A novel consecutive reaction of lithium acetylides with 2-aryl-1-chlorovinyl p-tolyl sulfoxides leading to the formation of (Z)-enediynes
作者:Tsutomu Kimura、Yuka Nishimura、Naoyuki Ishida、Hitoshi Momochi、Hironori Yamashita、Tsuyoshi Satoh
DOI:10.1016/j.tetlet.2012.11.152
日期:2013.2
The reaction of (E)-2-aryl-1-chlorovinyl p-tolyl sulfoxides with lithium acetylides gave a variety of (Z)-3-arylhex-3-ene-1,5-diynes in yields of up to 80% with high stereoselectivity. The structure of the (Z)-enediyne was confirmed by X-ray molecular structure analysis. The result of the reaction with deuterium- and 13C-labeled sulfoxide suggested that the reaction proceeds through cleavage of the
(E)-2-芳基-1-氯乙烯基对甲苯基亚砜与乙炔化锂的反应生成了多种(Z)-3-芳基己烯-3-烯-1,5-二炔,产率高达80%。高立体选择性。通过X射线分子结构分析确认了(Z)-烯二炔的结构。与氘和13 C标记的亚砜反应的结果表明,该反应通过在亚砜中的2-芳基-1-氯乙烯基单元的β位置处的C H键裂解来进行。