für 71.10€ kaufen ··· 9783848405251 ··· 1036118381 ··· This book describes the thermal fragmentation of heterocycles to give extended cumulenes called iminopropadienones, observed by infrared spectroscopy at 8 K and trapped by preparative flash vacuum pyrolysis (FVP). Chapter 1 describes the generation of iminopropadienones from Meldrum`s acid derivatives. Chapter 2 describes the generation of 2,6-diflourophenyl iminopropadienone from 3- (2,6-difluorophenyl)isoxazolo[5,4-d]pyrimidine-4(5H)-one and a comparison with the generation of the same iminopropadienone from the Meldrum`s acid derivative. Chapter 3 pyridopyrimidinones and a novel mesoionic compound (pyridopyrimidin-l-ium-2-olate) were used as precursors to generate iminopropadienones through flash vacuum pyrolysis. In Chapter 4, X-ray crystallography as well as theoretical calculations are used to investigate the unusual structural characteristics of Meldrum`s acid derivatives used as precursors of iminopropadienones. These molecules were found to have zwitterionic and non-planar structures. Hersteller: LAP Lambert Academic Publishing Marke: LAP Lambert Academic Publishing EAN: 9783848405251 Kat: Hardcover/Naturwissenschaften, Medizin, Informatik, Technik/Chemie Lieferzeit: Sofort lieferbar Versandkosten: Ab 20¤ Versandkostenfrei in Deutschland Icon: https://www.inforius-bilder.de/bild/?I=EdTPVrja8%2BNF07cMGGdIapvBNm1Xg%2Fa%2B6QggPtf%2BaNo%3D Bild:
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