Über Phosphorstickstoffverbindungen,XXXII. Über Vier- und fünfgliedrige Heterocyclen mit Phosphor,Stickstoff und Kohlenstoff im Ring |
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Authors: | Margot Becke-Goehring Manfred R Wolf |
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Abstract: | On reacting of oxamide with PCl5 the syntheses of the new N-, C- and pentavalent phosphorus containing heterocycles I and II (see “Inhaltsübersicht”), built up from interconnected four- and fivemembered ring systems, have been achieved. Reaction of N, N′- dimethyloxamide with PCl3 yields the compound III which may be chlorinated to IV. An intermolecular reaction between the PCl3- and carbonyl groups of IV gives V. The fivemembered ring systems III and V may each be linked together via N? CH3 bridges, i. e. via P? N(CH3)? P and P(O)? N(CH3)? P(O) units, respectively. N, N′- dimethyloxamide reacts with PCl5 to form a mixture of fivemembered heterocycles containing trivalent phosphorus (as a PCl group) and chlorinated carbon. |
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