Double Elimination Protocol for Convenient Synthesis of Dihalodiphenylacetylenes: Versatile Building Blocks for Tailor-Made Phenylene-Ethynylenes
作者:Akihiro Orita、Kazuhiko Miyamoto、Mikio Nakashima、Fangguo Ye、Junzo Otera
DOI:10.1002/adsc.200404014
日期:2004.6
Dihalodiphenylacetylenes are conveniently synthesized by a double elimination reaction of β-substituted sulfones which are readily obtained from halogen-substituted benzyl sulfone and benzaldehyde derivatives. Halogens can be incorporated at any desired positions in the diphenylacetylene skeleton simply by choosing the substitution position of the halogen on the aromatic rings of the starting compounds
二卤代二苯基乙炔可通过β-取代的砜的双消除反应方便地合成,所述β-取代的砜容易从卤素取代的苄基砜和苯甲醛衍生物获得。仅通过选择起始化合物的芳环上卤素的取代位置,就可以在二苯乙炔骨架中的任何所需位置掺入卤素。由此获得的具有不同卤素取代基的二苯基乙炔由于卤素的不同反应性而经历了顺序的碳-碳键形成。因此,可以在任何位置的二苯基乙炔骨架上结合各种部分,从而可以设计各种具有调节的结构和组成的量身定制的亚苯基-亚乙炔基。