Abstract
On an example of DMF was proposed and experimentally verified stepwise reaction scheme of the reaction of diphenylchlorophosphine with N,N-dialkylformamides. The first stage is autocatalytic reaction of the synthesis of (diphenylphosphoryl)(N,N-dialkylamino)chloromethanes proceeding through the intermediate formation of diphenyldichloro[(N,N-dialkylamino)chloromethyl]phosphoranes. In the second stage that includes NaI, the (diphenylphosphoryl)(N,N-dialkylamino)chloromethanes are reduced by diphenyliodophosphine (or triphenylphosphine) to form the final N,N-dialkyl(diphenylphosphinomethylene)iminium iodides. One can assume that the reaction of the synthesis of N,N-dialkyl(diphenylphosphinomethylene)-iminium iodides proceeds in a similar way, starting with diphenyliodphosphine.
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