C−F Bond Cleavage and Unexpected C−CN Activation by Cobalt Compounds Supported with Phosphine Ligands
作者:Xiaoyan Li、Hongjian Sun、Fengli Yu、Ulrich Flörke、Hans-Friedrich Klein
DOI:10.1021/om060572d
日期:2006.9.1
A cyclometalation reaction involving C−F bond activation at a cobalt(I) center with an aldazine-N atom as an anchoring group, for the first time, affords an ortho-chelated cobalt(III) complex, 1, containing a [C−Co−F] fragment. Under otherwise similar conditions, the first example of an organo cobalt(II) cyanide, 2, formed through Ar−CN bond activation could be obtained using the reaction of 2,6-difluorobenzonitrile
首次在环(I)中心进行C-F键活化,并以aldazine-N原子作为锚定基团的环金属化反应提供了一种含[ CF-]的邻位螯合的钴(III)配合物1。 Co-F]片段。除非在其他类似的条件,有机钴(II),氰化的第一例2可以通过使用2,6-二氟苄腈的反应用钴(0)络合物无C-F键来获得,至Ar-CN键活化形成激活。既1和2通过X射线衍射进行了表征。