New observations on the cyclisation of compounds containing the P–N–P skeleton by primary amines; an extension to diphosphinoyl-methanes
作者:Gordon Bulloch、Rodney Keat
DOI:10.1039/dt9760001113
日期:——
with Cl2P·NMe·P(S)Cl2. Similar reactions of Cl2(O)P·CH2·P(O)Cl2 with NH2But and NH2Pri give a new class of ring compound, Cl(O)[graphic omitted]R (R = Pri or But)(1,2,4-azadiphosphetans), but no cyclic products have been identified from analogous reactions with Cl2(O)P· CH2·CH2·P(O)Cl2. Attempted cyclisation of (Me2N)Cl(O)P-CH2-P(O)Cl(NMe2) by NH2But gives an acyclic product. (ButHN)(Me2N)(O)P·CH2·P(O)(NMe2)(NHBut)
二氯膦(二氯膦酰基)甲胺Cl 2 P·NMe·P(O)Cl 2与3摩尔当量的叔丁基胺反应,得到环二膦氮烷Cl [ t ] 。与此相反,(BU吨HN)[图形省略]卜吨是从有Cl的类似反应中分离的唯一产品2 P·NME·P(S)氯2。Cl 2(O)P·CH 2 ·P(O)Cl 2与NH 2 Bu t和NH 2 Pr i的相似反应给出了新的一类环化合物,Cl(O)我或卜吨)(1,2,4-氮杂二磷杂环戊烷),但从与Cl 2(O)P·CH 2 ·CH 2 ·P(O)Cl 2的类似反应中未发现环状产物。的(ME试图环化2 N)氯(O)P-CH 2 -P(O)Cl(上NME 2)由NH 2卜吨给出了一个无环产物。(BU吨HN)(ME 2 N)(O)P·CH 2 ·P(O)(NME 2)(NHBu吨),而不是(ME 2 N)(O)[图形省略]卜吨。后者的环状衍生物,是通过加热(Me 2 N)2(O)P·CH获得的2