作者:Gianfranco Cainelli、Paola Galletti、Daria Giacomini、Sebastiano Licciulli、Arianna Quintavalla
DOI:10.1002/ejoc.200601095
日期:2007.5
The synthesis of a new family of halogenated β-lactams by oxidative substitution of vinylic hydrogen in conjugated double bonds of 4-alkylidenazetidinones is reported. Optimised procedures give good to excellent yields of chloro, bromo, iodo and nitro derivatives. A mechanism to explain the direct vinylic substitution is proposed. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
报道了通过氧化取代 4-亚烷基氮杂环丁酮共轭双键中的乙烯基氢来合成新的卤代 β-内酰胺家族。优化的程序使氯代、溴代、碘代和硝基衍生物的产率从高到高。提出了一种解释直接乙烯基取代的机制。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)