Reactivity of Bis(organoamino)phosphanes with Aluminum(III) Compounds: Straightforward Access to Diiminophosphinates by Means of Hydrogen‐Atom Migration – An Experimental and Theoretical Study
作者:Jan Vrána、Roman Jambor、Aleš Růžička、Mercedes Alonso、Frank De Proft、Libor Dostál
DOI:10.1002/ejic.201402554
日期:2014.10
The reactivity of bis(organoamino)phosphanes PhP(NHR)(NHR′) (1a–1c, in which R, R′ = tBu for 1a; tBu, Dip for 1b; and Ph for 1c; Dip = C6H3–2,6-iPr2) and tBuP(NHDip)2 (1d) with Me3Al was investigated. The reaction of 1a or 1b gave in the first step compounds [PhP(NHR)(NR′)]AlMe2 (in which R, R′ = tBu for 2a; tBu, Dip for 2b) as a result of methane elimination that upon heating underwent nitrogen-to-phosphorus
双(有机氨基)膦的反应性 PhP(NHR)(NHR') (1a–1c,其中 R, R' = 1a 的 tBu;1b 的 tBu, Dip;1c 的 Ph;Dip = C6H3–2,6 -iPr2) 和 tBuP(NHDip)2 (1d) 与 Me3Al 进行了研究。1a 或 1b 的反应在第一步中得到化合物 [PhP(NHR)(NR')]AlMe2(其中 R,R' = 2a 的 tBu;2b 的 tBu,Dip)作为加热时甲烷消除的结果在二亚氨基次膦酸盐[Ph(H)P(NR)(NR')]AlMe2的形成下经历氮到磷的氢原子迁移(其中R,R' = tBu 3a; tBu,Dip 3b)。相比之下,磷烷 1c 显示出相反的反应顺序,首先由于氢原子迁移而产生中间体 [Ph(H)P(NHPh)(=NPh)]AlMe3 (2c),然后是甲烷消除和二亚氨基次膦酸盐的形成[Ph(H)P(NPh)2]AlMe2