64448-06-2Relevant articles and documents
Phosphane Alkylenes, 54. - Cumulated Ylides, 21. - A New Way to N-Substituted (Triphenylphosphoranylidene)ketenimines
Bestmann, Hans Juergen,Hotz, Michael,Witschel, Matthias,Roth, Dieter
, p. 2151 - 2154 (2007/10/02)
Reaction of methylenetriphenylphosphorane (1) with isocyanates 5 leads to ylides 6B, which can be methylated at the S atom to give the phosphonium salts 8.Treatment of 8 with sodium methanolate gives rise to formation of the phosphoranes 10, which on treatment with sodium bis(trimethylsilyl)amide undergo β-elimination to form the N-substituted (triphenylphosphoranylidene)ketenimides 3.
Cumulated Ylides, IX. New Synthesis of N-substituted (Triphenylphosphoranylidene)ketenimines and (Triphenylphosphoranylidene)thioketene
Bestmann, Hans Juergen,Schmid, Guenter
, p. 3369 - 3372 (2007/10/02)
Methylenetriphenylphosphorane (1) and isocyanidedichlorides resp. thiophosgene react in the molar ratio 3:1 to give N-substituted (triphenylphosphoranylidene)ketenimines 6A resp. (triphenylphosphoranylidene)thioketene 6B and methyltriphenylphosphonium chloride.The P-Cα-coupling constants in the 13C-NMR-spectra of 6 are in agreement with theoretical calculations.