54774-75-3Relevant academic research and scientific papers
β-Aminovinylphosphonium salts - A novel synthesis, properties, and structure
Mazurkiewicz, Roman,Fryczkowska, Beata,Gabanski, Rafal,Grymel, Miroslawa,Libera, Justyna
experimental part, p. 1365 - 1378 (2009/05/07)
The deacylation of easily accessible β-(N-acylamino)vinylphosphonium salts with methanol or some other nucleophiles gives β- aminovinylphosphonium salts in good yields. As indicated by the spectroscopic properties and by the results of single crystal X-ray diffraction studies the N-alkyl derivatives of the investigated compounds should be considered as strongly resonance stabilized β-iminium ylides rather than β-aminovinylphosphonium salts. In the case of N-aryl derivatives, the β-iminium ylide resonance structures are probably less pronounced. Copyright Taylor & Francis Group, LLC.
Synthesis and Reactions of β-Enamino Phosphonium Salts. Preparation of 2-Vinyl-1-aza-1,3-dienes and Penta-1,4-dien-3-ones
Barluenga, Jose,Merino, Isabel,Palacios, Francisco
, p. 341 - 345 (2007/10/02)
Reaction of N,P,P,P-tetraphenyl-λ5-phosphazene 1 and prop-2-ynyltriphenylphosphonium bromide 2 followed by addition of aliphatic, heteroaromatic and aromatic aldehydes leads to β-enamino phosphonium salts 7, while substituted tetrahydropyridines 9 are obtained when α,β-unsaturated aldehydes are used.Functionalized phosphonium salts 7 are precursors of Wittig reagents and act as intermediates in the synthesis of 2-vinyl-1-aza-1,3-dienes 11 and penta-1,4-dien-3-ones 12.
