121198-57-0Relevant articles and documents
A New and Safe Approach to (N-Vinylimino)phosphoranes
Katritzky, Alan R.,Mazurkiewicz, Roman,Stevens, Christian V.,Gordeev, Mikhail F.
, p. 2740 - 2742 (2007/10/02)
1-benzotriazoles, obtained by Staudinger phosphenimide-forming reaction of (azidoalkyl)benzotriazoles, possessing a proton in a β-position to nitrogen reacted with sodium hydride in THF to afford (N-vinylimino)phosphoranes in high yields.The latter were trapped with chalcone to give the corresponding 2,4-diphenylpyridines.
Preparation of Novel N-Vinyl-, N-(1-Butylvinyl)-, and N-(1-methyl-1-pentenyl)iminotriphenylphosphoranes and Their Reactions with α,β-Unsaturated Ketones
Iino, Yukio,Nitta, Makoto
, p. 2235 - 2237 (2007/10/02)
The novel N-vinyl- (2a) and a mixture of N-(1-butylvinyl)- (2b) and N-(1-methyl-1-pentenyl)iminotriphenylphosphoranes (2c) were prepared by the reaction of azidoethylene and 2-azido-1-hexene with triphenylphosphine, respectively.The thermal reaction of 2a, 2b, and 2c with α,β-unsaturated ketones undergoes an enamine-type alkylation and the subsequent aza-Wittig reaction to give pyridine derivative in modest yields.
