Synthesis and Reactions of the Novel Diphosphine, iPrN = C[CH₂P(NiPr₂)₂]₂

Heike Hund Institute of Inorganic and Physical Chemistry, University of Bremen, Leobener Straße, 28334, Bremen, Germany

Rolf-Dieter Hund Institute of Inorganic and Physical Chemistry, University of Bremen, Leobener Straße, 28334, Bremen, Germany

Senay Has Institute of Inorganic and Physical Chemistry, University of Bremen, Leobener Straße, 28334, Bremen, Germany

Gerd-Volker Röschenthaler Institute of Inorganic and Physical Chemistry, University of Bremen, Leobener Straße, 28334, Bremen, Germany

Abstract

The aldimine nBuN=CHiPr and phosphorus trichloride react to give phosphorus(III) amides in a 1:1 and 2:1 molar ratio. An imine-enamine tautomerism is proposed. In a [4+1] cycloaddition reaction diacetyl-(N-n-butyl)diimine and λ³σ³P-species, RPCl₂ or EtOPCl₂, form 1,2,3λ⁵σ⁴ -diazaphospholenes¹. The same diimine and (Et₂N)₂ PCl is furnishing annellated azaphospholenes¹. A 1,3,4λ⁵ σ⁴ -diazaphospholanium is formed from a λ³σ³ -phosphenium and iPrN=CMe₂ ². Phosphorus(III) amides P(NR₂)₃ (R= Me, Et) and O-trimethylsilylated diacetyldioxime give rise to yield the first monocyclic pentaazaphosphoranes.

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Synthesis and Reactions of the Novel Diphosphine, iPrN = C[CH₂P(NiPr₂)₂]₂

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Synthesis and Reactions of the Novel Diphosphine, iPrN = C[CH2P(NiPr2)2]2

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Synthesis and Reactions of the Novel Diphosphine, iPrN = C[CH₂P(NiPr₂)₂]₂