The ‘one-pot’ syntheses of α,α′-diphosphino-substituted imines: a unique reaction of bulky bis(dialkylamino)chlorophosphines

Abstract

The reaction between various bis(dialkylamino)chlorophosphines and N-isopropyl-substituted lithium amides afforded bis(α,α′-phosphino)imines in a ‘one-pot’ procedure. These compounds react with sulfur to generate intramolecularly hydrogen-bonded ylide derivatives. The molecular structure of (Pr₂ⁱN)₂PCH₂C(NBu^t)CH₂P(NPrⁱ)₂ has been determined by X-ray crystallography.