Cyclisation of bis(dichlorophosphino)-, bis(dichlorophosphinoyl)-, and bis(dichlorophosphinothioyl)-amines by primary amines
作者:Gordon Bulloch、Rodney Keat
DOI:10.1039/dt9740002010
日期:——
Cl2P(O)·NMe·P(O)Cl·N(H)Me, (IIb), was readily cyclised by t-butylamine to give [ClP(O)·NMe]2, (Ib). Phosphoryl chloride reacts with 3 mol equiv. of primary amines to give mixtures of the derivatives Cl2P(O)·N(H)R (R = Me, Et, Pri, or But) and ClP(O)[N(H)R]2(R = Me, Et, or Pri), rather than cyclodiphosphazanes as obtained in analogous reactions with phosphorus trichloride.
化合物〔氯2 P(X)] 2 NR(IIIA,X =孤对电子,R = Me中,Et或卜吨; IIIB,X = O,R = Me或Et; IIIc中,X = S,R = Me)与3摩尔当量反应 叔丁基胺得到环二磷氮烷Cl(X)[图略] Bu t,(V)。也已经尝试通过相同的方法从(IIIa)制备长期寻求的环磷(III)氮杂(ClPNR)n(R = Me或Et),并且已经获得了形成这些化合物的新的nmr和质谱证据。衍生物(n = 3和4,R = Me;n = 2和3,R = Et),但未分离出纯产物。只有当X = O且R = Me或Et时,才能证明形成了衍生物Cl 2获得了P(X)·NR·P(X)Cl·N(H)Bu t,并讨论了涉及快速环化步骤的可能原因。已知的衍生物Cl 2 P(O)·NMe·P(O)Cl·N(H)Me(IIb)易于用叔丁胺环化,得到[ClP(O)·NMe] 2,(Ib) 。