The apicophilicity of thio-substituents in trigonal bipyramidal phosphoranes
作者:Stephen Bone、Stuart Trippett、Peter J. Whittle
DOI:10.1039/p19740002125
日期:——
data on the energetics of the pseudorotation processes available to these systems. It is concluded that the apicophilicities of phenoxy- and phenylthio-groups are similar, with the balance varying according to the nature of the other ligands. Further evidence is given for the high apicophilicity of the hydrogen atom. The concept of multiple turnstile rotation processes is discussed with particular reference
Mecanisme de formation et de transformation des spirophosphoranes—VI
作者:D. Bernard、R. Burgada
DOI:10.1016/0040-4020(75)80084-6
日期:1975.1
Spirophosphoranes obtained by addition of tricoordinated phosphorus compounds on α diketones and α ethylenic ketones are discussed. Steric and electronegativity factors which determine the number of stable isomers are considered, but no interconversion mechanism is postulated. Phosphorus epimerization has been studied with compounds containing two centres of asymmetry.
Reactions des cetones acetyleniques avec les phosphites et les aminophosphites en presence de reactifs de piegeage protiques. Synthese, mecanisme de fo
作者:D. El Manouni、Y. Leroux、R. Burgada
DOI:10.1016/0040-4020(86)80007-2
日期:1986.1
butyne-1,4-dione ; 1-Methoxy-phenyl-4-Phenyl-2-Butyne-1,4-dione ; 4-oxo-4-phenyl-Methyl-2-butynoate and 1,3-diphenyl-1-propyne-2-one. All these reactions were performed in presence of protic trapping reagents ZH such as methanol , phenol or phtalimid . All these reactions lead to a very unstable 1,3 dipolar species like
Mécanisme de formation et de transformation des spirophosphoranes
作者:R. Burgada、C. Laurenço
DOI:10.1016/s0022-328x(00)91489-x
日期:1974.2
The synthesis of about forty new spirophosphoranes containing a PH bond offers examples of new cases of tautomeric equilibrium between the triand pentacoordinated forms as shown by: (a) recording the 31P NMR spectra between 20 and 150°, (b) using a chemical test which is specific of the PIII form. These results allowed us to discuss factors influencing the equilibrium PIII ⇌ PV.
合成约40个含PH键的新螺磷杂环戊烷提供了三配位和五配位形式之间互变异构平衡新情况的例子,如:(a)记录20至150°之间的31 P NMR光谱,(b)使用a P III形式的化学测试。这些结果让我们来讨论影响平衡P因素III ⇌P V。
Cyclic organophosphorus compounds as possible pesticides. Part I. 1,3,2-Dioxaphospholans
作者:R. S. Edmundson、A. J. Lambie
DOI:10.1039/j39660001997
日期:——
Butane-2,3-diol and 2,3-dimethylbutane-2,3-diol have been converted into substituted 2-mercapto-2-thiono-1,3,2-dioxaphospholans, and thence into 2-(N-substituted carbamoylmethyl)thio-derivatives. Some new ring-substituted 1,3,2-dioxaphospholans, with alkoxy, alkylthio, and dimethylamino groups attached to phosphorus, have also been prepared from aliphatic 1,2-diols. The hydrolytic stability and insecticidal