Substitution at 4-position in 1,2,3σ<sup>2</sup>-diazaphosphole by phosphorus trichloride
作者:Jörg Luber、Alfred Schmidpeter
DOI:10.1039/c39760000887
日期:——
2-Methyl-1,2,3Ï2-diazaphospholes are obtained as hydrochlorides from methylhydrazones and an ecxess of PCl3 which, with longer reaction times, give the 4-dichlorophosphino-derivatives; 4-alkyl substituted diazaphospholes may be separated from their mixture with 4-unsubstituted compounds by the use of this reaction.