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.