6588-22-3Relevant academic research and scientific papers
Method for synthesizing n-butyl phosphorus thiodichloride
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Paragraph 0017; 0019; 0020; 0021; 0023; 0025, (2018/10/19)
The invention discloses a method for synthesizing n-butyl phosphorus thiodichloride, and relates to the technical field of organic synthesis. The synthesis method comprises the steps that n-butylamineis slowly dropped into a mixture of thiophosphoryl chloride, methylbenzene and potassium carbonate, after dropping is completed, ultrasonic waves are adopted for promoting a reaction, after the reaction is completed, methylbenzene is recycled, and remaining materials are products. Due to the fact that ultrasonic waves are adopted in the n-butyl phosphorus thiodichloride synthesis reaction, the content and the yield can be remarkably increased.
DIE STRUKTUR VON ALKYL- UND ARYLPERTHIOPHOSPHONSAEUREANHYDRIDEN IN LOESUNG
Ohms, Gisela,Treichler, Antje,Grossmann, Gisbert
, p. 95 - 102 (2007/10/02)
The analysis of 1H-, 31P- and 13C-NMR spectra of different alkyl- and arylperthiophosphonic acid anhydrides shows that these compounds prefer a dimeric structure in solution.They exist as 2,4-diorganyl-2,4-dithioxo-1,3,2λ5,4λ5-dithiadiphosphetanes.Most of the perthiophosphonic acid anhydrides form configuration isomers which differ in the position of the thioxo groups relatively to the ring plane.The concentration of the trans-isomer is generally larger than that of the cis-isomer.The ratio of the concentration of both isomers is obviously determined by the polarity of the solvent used.Mixing of solutions of different perthiophosphonic acid anhydrides results in unsymmetrical compounds also existing in cis- and trans-configuration. 31P chemical shifts and geminal P-P coupling constants for symmetrical and unsymmetrical perthiophosphonic acid anhydrides are presented and discussed. - Key words: 31P chemical shifts; P-P coupling constants; perthiophosphonic acid anhydrides; mixed perthiophosphonic acid anhydrides; configuration isomers; 2,4-diorganyl-2,4-dithioxo-1,3,2λ5,4λ5-dithiadiphosphetanes.
Process for preparing alkyl or aryl phosphorus halides and mixed isomers thereof
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, (2008/06/13)
Alkyl or aryl phosphonic or phosphonothioic dihalides and phosphinic or phosphinothioic monohalides are prepared by reacting an alkyl halide or aryl halide respectively with a tri-valent phosphorus compound having at least two halogens attached thereto, and preferably three two halogens such as phosphorus trihalide, in the presence of P4 O10 or P4 S10 under at least autogenous pressure at a temperature of from 200° C. to 450° C. The compounds obtained are useful as constituents in insecticides, fungicides, pharmaceuticals, and as intermediates in preparation of other organophosphorus compounds.
