A FACILE AND EFFICIENT PREPARATION OF THE UNKNOWN PRIMARY β-ENAMINOPHOSPHINES. SYNTHESIS OF THE FIRST 1,3,4-DIAZA-λ5-PHOSPHININES.

Article abstract of DOI:10.1016/S0040-4039(00)96232-4

N-Arylphospha-λ⁵-azenes (1) and (3) were reduced with LiAlH4 to phosphine derivatives.The addition of ethyl azidoformate to β-enaminophosphine (4) followed by heating at 150 deg C yielded 1,3,4-diaza-λ⁵-phosphinine derivatives (8).