Univerzita Pardubice Fakulta chemicko- technologická

Univerzita Pardubice

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Publikace detail

3-Phenoxy-1,2,4-dithiazol-5-ones as novel sulfurizing agents for phosphorus(III) compounds

Autoři: Hanusek Jiří | Ponomarov Oleksandr

Rok: 2009

Druh publikace: ostatní - přednáška nebo poster

Strana od-do: nestránkováno

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
cze	3-Fenoxy-1,2,4-dithiazol-5-ony jako nové sulfurizační činidla pro sloučeniny fosforu(III)
eng	3-Phenoxy-1,2,4-dithiazol-5-ones as novel sulfurizing agents for phosphorus(III) compounds	A number of reagents have been designed and tested for the sulfurization of phosphorus(III) compounds from which those based on 1,2,4-dithiazole skeleton appear to be advantageous alternative to existing sulfurizing reagents. In our previous work we have tested sulfurizing efficiency of various known 1,2,4-dithiazoles by kinetic method and we have found 5-ethoxy-1,2,4-dithiazol-3-one (1) to be the most powerful but rather unstable agent. In our present work we have prepared and characterized analogous 5-(3- and 4-substituted phenoxy) derivatives 8 and tested their sulfurizing efficiency towards triphenyl phosphite. It was found that 5-phenoxy-1,2,4-dithiazol-3-ones (8) are completely stable on air at room temperature and their reactivity with triphenyl phosphite is comparable with 1. Detailed mechanism of sulfur transfer will be also discussed.