We have developed a regiospecific method for synthesis of N'-phosphinatodiazene N-oxides, a previously unknown type of azoxy compounds in which the diazene oxide fragment is directly connected with the phosphinate group. The method involves reaction of amidoesters of alkyl- and arylphosphonic acids with nitroso compounds in the presence of dibromoisocyanurate.
Photolysis of some unsymmetrical phosphinic azides in methanol
作者:Martin J.P. Harger、Sally Westlake
DOI:10.1016/0040-4020(82)80195-6
日期:1982.1
less bulky. For t-butylmethylphosphic azide there is very little preference for migration of But relative to Me. Small amounts of unrearranged products such as ButPhP(O)NHOMe and ButPhP(O)NH2 are generally produced in the photolyses, together with the methyl phosphinates RPhP(O)OMe (major product when R = Me) resulting from (non-photochemical) solvolysis of the azide.
当alkylphenylphosphinic酸PRHP(O)N 3(R =甲基,乙基,镨我,或卜吨)在MeOH中光解任一烷基或苯基可以从P到N的Curtius重状重排迁移。产品的组成表明,烷基R的迁移是优选的。但是,该偏好并不大,并且随着R改变Bu t →Pr i →Et→Me(相对于Ph的大约迁移能力分别为2.1、1.7、1.3和1.2)而降低,这可能是因为PhP键具有更好的能力当R的体积较小时,可以假设Ph迁移具有正确的构象。对于叔丁基甲基叠氮化物,Bu t的迁移非常少。相对于我。少量未重排的产物如卜吨PHP(O)NHOMe和卜吨PHP(O)NH 2,一般在photolyses产生,连同甲基膦酸盐RPHP(O)OME(主要产物,当R = Me)的从所得(非光化学)叠氮化物的溶剂分解。
Hydrolyse Basique de phosphonates I. Étude qualitative
作者:Henri Christol、Michel̀e Levy、Claude Marty
DOI:10.1016/s0022-328x(00)88699-4
日期:1968.6
The hydrolysis of phosphonates by alkali in aqueousdioxane has been studied. The symmetrical phosphonates are hydrolysed with loss of one ester group to form a monoacid. With the mixed phosphonates the better leaving group is replaced.
Darstellung von Phosphonsäurealkylesteramiden als strukturelle Analoga von Sulfadimidin und Acetophenetidin
作者:Stephan Buseck、Richard Neidlein
DOI:10.1002/ardp.19933260403
日期:——
Die Phosphonsäurealkylesteramide 19 und 36 wurden als strukturelle Analoga von Sulfadimidin und Acetophenetidin dargestellt. 19 wurde nicht durch nukleophile aromatische Substitution erhalten, war jedoch zugänglich durch katalytische Hydrierung des entspr. Nitroderivats. Kondensation von 13 mit aromatischen Aldehyden und nachfolgende Reduktionen lieferte die Amine 26‐28.