104236-63-7Relevant academic research and scientific papers
2-Thioxo-1,3,2-dithiaphospholanes - Solid-state MAS NMR and crystal structure investigations as well as IGLO calculations of 31P shielding tensors
Schwarz, Peggy,Ohms, Gisela,Krueger, Kerstin,Grossmann, Gisbert,Kaiser, Volker
, p. 27 - 43 (1998)
2-Thioxo-1,3,2-dithiaphospholanes with P-substituents R = Me, Et, i-Pr, t-Bu, Ph, 3,5-Me2C6H3, and 4-MeOC6H4 were prepared and characterized by solution and high resolution solid-stale 31P and 13C NMR spectroscopy. The influence of different alkyl and aryl substituents at the phosphorus atom on the anisotropy of 31P chemical shift and on the molecular structure is discussed. The orientation of the principal axes with respect to the molecular frame is predicted from the solid-state 31P NMR results. Quantum chemical calculations of the 31P shielding tensors hy the IGLO method confirm these results. The crystal structures of 2-tert-butyl-2-thioxo-1,3,2-dithiaphospholane and 2-(3,5-dimethylphenyl)-2-thioxo-1,3,2-dithiaphospholane are presented and discussed.
Organophosphorus compounds XIII. The reaction of 2,4-bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide (LR) with dihydric alcohols. A new route to 1,3,2-dioxaphosphorinane
Shabana,Osman,Atrees
, p. 1271 - 1282 (1993)
2,4-Bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide (Lawesson's Reagent) and its p-phenoxy derivatives react with 1,2-ethanediols and 1,4-butanediol at different reaction temperatures in acetonitrile as a solvent to give 1,3,2-dioxaphosphorinane-2-sulfide, thioacetamide and cyclic trithiopyrophosphonate. Compatible analytical and spectroscopic data were obtained for all the new compounds. A mechanism is proposed to explain the formation of compounds 5, 6, 7, 9 and 11. Reaction of 5a with LR gave 1,3,2-dithiaphosphorinane-2-sulfide.
Application of four-membered ring chalcogenation reagents to the synthesis of new phosphorus-chalcogen heterocycles
Hua, Guoxiong,Cordes, David B.,Slawin, Alexandra M. Z.,Woollins, J. Derek
, p. 9 - 20 (2017/02/19)
The reaction of four-membered ring chalcogenation reagents such as Lawesson's reagent, 2,4-diferrocenyl-1,3,2,4-diathiadiphosphetane 2,4-disulfide (the ferrocene analogy of Lawesson's reagent) and Woollins' reagent with alkyl- or aryl-dithiols in refluxing toluene gave a series of five- to seven-membered organophosphorus-chalcogen heterocycles in 24% to 87% yields. Five representative X-ray structures confirm the formation of these five- to seven-membered heterocycles. (Chemical Equation Presented).
Dithiaphosphagermetannes-1,3,2,4 et dithiaphosphadigermolannes-1,4,5,2,3
Barrau, J.,Amine, M. El,Rima, G.,Satge, J.
, p. 615 - 620 (2007/10/02)
The synthesis of the new germylated and phosphorylated heterocycles 2-anisyl-4,4-dimethyl-2-thio-1,3,2,4-dithiaphosphagermetane, (1), and 5-anisyl-2,2,3,3-tetramethyl-5-thio-1,4,5,2,3-dithiaphosphadigermolane, (2), are described.The decomposition of 1 with formation of (Me2GeS)3 and (AnPS2)n is observed at room temperature.At 200 deg C 2 undergoes thermal fragmentation leading to (Me2GeS)3 and (AnPS)n.These results are explained by two mechanisms of decomposition involving formation of transient species and or , respectively.Exchange reactions between 2 and various metal (MIVB) chlorides are described.With Me2SiCl2 the reaction leads to silathione , probably via transient dithiaphosphasiletane.
