作者:Volkhard Austel、Sylvia Schmid、Daniel Schühle、Simon Steinberger、Zhang Xin
DOI:10.1055/s-2005-918409
日期:——
1,2,2a,3-Tetrahydro-1,4,7b-triazacyclopenta[cd]indenes 12 were obtained from 3-halomethyl-5-chloro-6- or 8-nitropyridines in a novel reaction sequence which comprises a nucleophilic aromatic substitution followed by an intramolecular nucleophilic substitution. The starting material for this reaction (9a) can be prepared in good yields by halocyclization of the easily accessible 2-allylamino-6-chloro-3-nitropyridine
1,2,2a,3-Tetrahydro-1,4,7b-triazacyclopenta[cd]indenes 12 是从 3-halomethyl-5-chloro-6- 或 8-nitropyridines 在包含亲核芳族取代的新反应序列中获得的其次是分子内亲核取代。该反应的起始材料 (9a) 可以通过容易获得的 2-烯丙氨基-6-氯-3-硝基吡啶 (4a) 的卤化反应以良好的收率制备。脂肪胺和芳香胺都是合适的,除非它们被强烈失活。三环化合物是相对活泼的亲电子试剂,可作为组合合成的有趣中间体。