Reactivity of Carbonyl-Functionalized Phosphaalkenes RC(O)P=C(NMe2)2 (R =tBu, Ph) towards Electrophiles
作者:Lothar Weber、Stefan Uthmann、Hans-Georg Stammler、Beate Neumann、Wolfgang W. Schoeller、Roland Boese、Dieter Bläser
DOI:10.1002/(sici)1099-0682(199912)1999:12<2369::aid-ejic2369>3.0.co;2-s
日期:1999.12
[RC(OGaMe3)=P(GaMe3)C(NMe2)(2)] (10a,b). In contrast, one molecule of InMe3 was bound to the phosphorus center of the phosphorus compound. Reaction of the phosphaalkenes with [Ni(CO)(4)], [Fe-2(CO)(9)] or [(Z)-cyclooctene}Cr(CO)(5)] also took place at the pnictogen atom, resulting in complexes of the type [RC(O)PM(CO)(n)}C(NMe2)(2)] (R = tBu, Ph; M = Ni, n = 3; Fe, n = 4; Cr, n = 5). The chemical
羰基官能化磷烯烃 RC(O)P=C(NMe2)(2) [R = tBu (2a), Ph (2b)] 与质子酸和烷基化试剂在二配位磷原子上发生反应,得到膦酰基取代的碳正离子 3a,b 和 4a,b。相反,用 Me3SiOSO2CF3 处理导致甲硅烷基对氧原子的攻击,并形成 [RC(OSiMe3)=PC(NMe2)(2)]SO3CF3 (5a,b)。类似地,路易斯酸 B(C6F5)(3)、Al(tBu)(2)Cl 和 AlMe3 与羰基的氧原子相连。将两当量的 GaMe3 添加到磷烯烃的氧和磷原子中以产生不耐热复合物 [RC(OGaMe3)=P(GaMe3)C(NMe2)(2)] (10a,b)。相比之下,一分子 InMe3 与磷化合物的磷中心结合。磷烯烃与 [Ni(CO)(4)] 的反应,[Fe-2(CO)(9)] 或 [(Z)-环辛烯}Cr(CO)(5)] 也发生在 pnictogen