作者:Norbert De Kimpe、Sven Mangelinckx、Marc Boeykens
DOI:10.1055/s-2008-1072747
日期:2008.5
of stable exocyclic enamines. The synthesis of these inductively stabilized N-alkyl-2-methyleneazetidines entails the imination of β-halo ketones, followed by α′,α′-dichlorination and subsequent 1,4-dehydrohalogenation. The synthesis of these azetidines is easy and can be performed on multigram scale in good yield. 2-(Dichloro-methylene)azetidines undergo smooth reactions towards electrophilic reagents
2-(二氯亚甲基)氮杂环丁烷构成了一类新的稳定的环外烯胺。这些诱导稳定的 N-烷基-2-亚甲基氮杂环丁烷的合成需要 β-卤代酮的亚胺化,然后是 α',α'-二氯化和随后的 1,4-脱卤化氢。这些氮杂环丁烷的合成很容易,并且可以在多克规模上以良好的收率进行。2-(二氯-亚甲基)氮杂环丁烷与亲电试剂发生平稳反应,这可以通过烷氧基卤化和水解为吡咯烷-3-酮来证明。