Phosphorous trialkylphosphites

Following the same procedure, phosphoric thiol esters are prepared by the treatment of trialkylphosphites with thiols in the presence of TeCl4 and lutidine. ... 

Mit guten Ausbeuten lassen sich Nitrone durch Phosphor(IIl)-chloridzu Iminen redu-zieren (s.Bd. X/4, S.436, 439). Anstelle von Phosphor(III)-chlorid kannin einigen Fallen auch Trialkylphosphit verwendet werden. 

Tervalent phosphorus compounds (phosphorous derivatives) are weil-established reagents for the deoxygenation of amine oxides and nitrones, and they provide a clean and convenient method for the preparation of furazans from furoxans. Mukaiyama et al.425 and Grundmann426 used trialkylphosphites, and they have been widely employed since that time, both with and without solvents.80,85,93,95,97,352 The simple dialkyl- and diarylfuroxans usually require more vigorous conditions (e.g., refluxing triethyl phosphite) than do strained derivatives or the benzofuroxans.85,97... 

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