作者:Norbert De Kimpe、Dirk De Smaele、Zsolt Sakonyi
DOI:10.1021/jo962351v
日期:1997.4.1
in competition with the substitution products, i.e. 2-(tert-butoxymethyl)aziridines. Various attempted functionalizations of 1-(arylmethyl)-2-methyleneaziridines failed, but they proved to be excellent substrates for the synthesis of beta-lactam derivatives, i.e. 1-(arylmethyl)-2-iminoazetidines, through ring expansion with azides carrying electron-withdrawing substituents.
通过碱诱导的2-(溴甲基)氮丙啶的1,2-脱氢溴化反应,已经开发出了一种新的合成方法,可以产生2-亚甲基氮丙啶。几对碱-溶剂对没有产生2-亚甲基氮丙啶。在四氢呋喃中仅叔丁醇钾提供与取代产物竞争的2-亚甲基氮丙啶,即2-(叔丁氧基甲基)氮丙啶。1-(芳基甲基)-2-亚甲基氮杂环丁烷的各种尝试的官能化均未成功,但它们被证明是合成β-内酰胺衍生物(即1-(芳基甲基)-2-亚氨基氮杂环丁烷)的极好底物,通过叠氮化物携带电子-取代基。