One-pot synthesis of telluroketene acetals and haloketene acetals using sp2 geminated hetero organobismetallic intermediates
作者:Palimécio G. Guerrero、Paulo R. de Oliveira、Adriano C.M. Baroni、Francisco A. Marques、Ricardo Labes、Miguel J. Dabdoub
DOI:10.1016/j.tetlet.2012.01.065
日期:2012.3
A novel one-pot synthesis of 1,1-dihalo-1-alkenes and 1,1-bis(butyltelluro)-1-alkenes was developed from hydrozirconation of alkynylzinc bromide with Cp2Zr(H)Cl and subsequent capture of the Zn/Zr 1,1-heterodimetallo-1-alkene intermediates with halogen and tellurium electrophiles. These protocols, which include multiple reactions in a one-pot procedure, allow the preparation of the potentially useful
通过用Cp 2 Zr(H)Cl对炔基溴化锌进行加氢锆化反应并随后捕获锌,开发了一种新型的一锅法合成1,1-二卤-1-烯烃和1,1-双(丁基碲)-1-烯烃。/ Zr 1,1-杂二金属-1-烯烃与卤素和碲亲电试剂的中间体。这些方案包括一锅法中的多个反应,可以在温和的条件下以良好的收率从末端炔烃制备潜在有用的卤代丁烯缩醛和碲烯酮缩醛。