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The main product from the reaction between bis(dimethylamino)fluoromethylidene-phosphorane (1) and n-butyllithium in the presence of tetramethylethylenediamine is n-butyl-dimethylamino-methyl-{[tris(dimethylamino)phosphoranylidene]methylene}-phosphorane (7). As a by-product from the reaction between methyl-bis(dimethylamino)difluorophosphorane and n-butyllithium bis(dimethylamino)-methyl-{[n-butyl-bis(dimethylamino)phosphoranylidene]methylene}-phosphorane (9) was isolated in small yield. The new carbodiphosphoranes 7 and 9 are characterized by their  1 H,  13 C, and  31 P NMR and mass spectra.

zeitschrift für naturforschung b

Neue Carbodiphosphorane. Notiz zur Reaktion zwischen Bis(dimethylamino)fluormethylidenphosphoran und n-Butyllithium / New Carbodiphosphoranes. Note on the Reaction between Bis(dimethylamino)fluoromethylidene-phosphorane and n-Butyllithium