作者:A. Pietrzykowski、S. Pasynkiewicz
DOI:10.1016/0022-328x(92)80217-l
日期:1992.11
The reaction of nickelocene with phenyllithium, ortho-, meta- and para-methylphenylmagnesium bromide, and 2-((dimethylamino)methyl) phenyllithium are studied. It was found that unstable compounds CpNiC6H4R} (R H, o-, m-, p-CH3) are formed in those reactions. For R CH2N(CH3)2, a stable compound, CpNiC6H4CH2N(CH3)2, is formed due to intramolecular coordination. In other cases, mainly coupling reactions
研究了新世元与苯基锂,邻,间和对甲基苯基溴化镁以及2-((二甲基氨基)甲基)苯基锂的反应。发现在那些反应中形成不稳定化合物CpNiC 6 H 4 R}(R(H,o-,m-,p -CH 3)。对于RCH 2 N(CH 3)2,一种稳定的化合物CpNiC 6 H 4 CH 2 N(CH 3)2由于分子内的配位而形成。在其他情况下,主要发生偶联反应,并形成联苯,二苯甲酰基和高级偶联产物。化合物(CpNiC 6 ħ 4 R)也被形成为Cp的热分解η的产物2- Ç 2 ħ 4)NIC 6 ħ 4 R.它进一步反应以形成相同的产品作为上述。提出并讨论了偶联反应的机理。