Catalytic coupling of ethylene and internal olefins by dicationic palladium(II) and platinum(II) complexes: Switching from hydrovinylation to cyclopropane ring formation
Catalytic coupling of ethylene and internal olefins by dicationic palladium(II) and platinum(II) complexes: Switching from hydrovinylation to cyclopropane ring formation
复制标题
DOI：
10.1021/om050397l
复制
发表时间：
2005-07-04
期刊：
影响因子：
2.8
通讯作者：
Vitagliano, A
中科院分区：
文献类型：
--
作者：
Cucciolito, ME;D'Amora, A;Vitagliano, A
双阳离子钯（II）和铂（II）配合物[（PNP）M（C2 H4）] BF 4）（2）（1a，M = Pt; 1b，M = Pd; PNP = 2，6-双（（二苯基膦基）甲基）吡啶）和[（PPP）Pt（C2 H4）]（BF 4）（2）（7; PPP = triphos）催化乙烯与三取代和四取代烯烃的交叉偶联反应，其可产生加氢乙烯化和环丙烷化产物。产物比率强烈地受配体和金属的选择的影响，两个极限情况是Ia和7，其分别选择性地给出加氢乙烯化和环丙烷化产物。
The dicationic palladium(II) and platinum(II) complexes [(PNP)M(C2H4)]BF4)(2) (1a, M = Pt; 1b, M = Pd; PNP = 2,6-bis((diphenylphosphino)methyl)pyridine) and [(PPP)Pt(C2H4)](BF4)(2) (7; PPP = triphos) catalyze a cross-coupling reaction of ethylene with triand tetrasubstituted olefins, which can lead to both hydrovinylation and cyclopropanation products. The product ratio is strongly affected by the choice of the ligand and of the metal, the two limiting cases being la and 7, which selectively give the hydrovinylation and the cyclopropanation products, respectively.