Synthesis, Characterization, and Reactions of the New Seven-Membered Nickelacycle (2,2‘-Bipyridine)-6,7-dihydro-5<i>H</i>-dibenzo[<i>c</i>,<i>e</i>]nickelepine
作者:Barbara Patzke、Amnon Stanger
DOI:10.1021/om9509812
日期:1996.5.28
(2), instead of the expected (2,2‘-bipyridine)-1,2-dihydro-1-nickelacyclobutabenzene. On treatment with maleic anhydride the title compound (2) undergoes reductive elimination to form dihydrophenanthrene. The methylene insertion product 6,7-dihydro-5H-dibenzo[a,c]cycloheptene and the cyclic ketone 5,7-dihydro-6H-dibenzo[a,c]cyclohepten-6-one are obtained when 2 is reacted with dibromomethane and CO
二格里雅试剂1,2-二氢-1-镁杂环丁苯(1)与(2,2'-联吡啶)二氯化镍的反应生成了主要产物意想不到的七元镍环(2,2'-联吡啶) -6,7-二氢-5 H-二苯并[ c,e ]镍硒平(2),而不是预期的(2,2'-联吡啶)-1,2-二氢-1-镍弹性环丁苯。用马来酸酐处理时,标题化合物(2)进行还原消除,形成二氢菲。亚甲基插入产物6,7-二氢-5 H-二苯并[ a,c ]环庚烯和环酮5,7-二氢-6 H-二苯并[ a],Ç ]环庚烯-6-酮当获得2与分别二溴甲烷和CO,反应。将1和(2,2'-联吡啶)二氯化镍与CH 2 Br 2或CD 2 Cl 2的反应混合物淬灭,为八元双镍环的中间体提供了有力证据,并提供了有关导致形成的可能机理的一些信息。的2。