Bindungsdelokalisierte Betaine; 1. Mitteilung. Neuartige Stickstoff-, Phosphor- und Arsen-Betaine des Maleinsäure-anhydrids durch Dreikomponenten-Reaktion
Bindungsdelokalisierte Betaine; 1. Mitteilung. Neuartige Stickstoff-, Phosphor- und Arsen-Betaine des Maleinsäure-anhydrids durch Dreikomponenten-Reaktion
作者:Arthur H. Schmidt、Wolfgang Goldberger、Mario Dümmler、Amokrane Aimène
DOI:10.1055/s-1988-27706
日期:——
Bond-Delocalized Betaines; Part 1. Novel Nitrogen, Phosphorus and Arsenic Betaines of Maleic Anhydride by a Three-Component Reaction Novel betaines derived from maleic anhydride were prepared by reaction of dichloromaleic anhydride with a cationogenic species such as pyridines, isoquinoline, quinoline, pyrazine, 1-methylimidazole, 4-methylmorpholine, triphenylphosphine, or triphenylarsine and water (Method A) or acetic anhydride (Method B).
作者:R. Alan Aitken、Vidar Bjørnstad、Tracy Massil、Jan Skramstad
DOI:10.1080/10426509908546310
日期:1999.1.1
In an extension of our recent work on generating acetylenic amino acid derivatives by flashvacuumpyrolysis (FVP) of appropriate stabilised phosphorus ylides,1 we examined the ylides 1 with a free amino group. Rather than the expected acetylenic product these gave the novel cyclic ylides 2 with loss of ethanol. Preliminary attempts to bring about extrusion of Ph3PO from these gave rather confusing