that these complexes were formed by the direct electrophilic attack of methyl triflate at the carbonyl oxygen of the enal or enone ligand on the palladium and platinum. In fact, no insertion of acrolein into the platinum−methyl bond of the separately isolated methylplatinum complex proceeded. On the other hand, methyl iodide underwent oxidative addition with zerovalent enal or enone complexes to give
的反应(η 2 -CH 2 CHCHO)ML 2(M =
钯,
铂; L = PPH 3,L 2 =
DPPF)与三
氟甲磺酸甲酯,得到η 3 -methoxyallyl配合物[(η 3 -CH 3 OCHCHCH 2)ML 2 ] [OTf]。在[(ηX射线衍射分析3 -CH 3 OCHCHCH 2)M(
DPPF)] [光学传递函数](M =
钯,
铂)显示一个扭曲的η 3 -烯丙基结构。烯酮络合物(η 2 -CH 2 CHCOCH 3)M(PPH 3)2也与三
氟甲磺酸甲酯,得到[(η反应3 -CH 3 OC(CH 3)CHCH 2)M(PPh 3)2 ] [OTf]。提出这些络合物是由三
氟甲磺酸甲酯在
钯和
铂上的烯或
配体配体的羰基氧上的直接亲电子攻击形成的。实际上,没有将
丙烯醛插入单独分离的甲基
铂配合物的
铂-甲基键中。另一方面,对
碘甲烷与零价的烯或烯酮配合物进行氧化加成,以得到与烯或烯酮分子解离相伴的甲基
金属配合物。