作者:B. V. Paponov、O. V. Shishkin、S. V. Shishkina、R. I. Zubatyuk、A. L. Kalyuzhny、V. I. Musatov
DOI:10.1007/s11172-008-0098-4
日期:2008.3
Abstract6-Aroyl-7-arylindolo[3,4-jk]phenanthridin-5(4H)-ones (2a–i) were synthesized by heating 3-(2-aryl-2-oxoethylidene)-2,3-dihydroindol-2-ones (1a–i) in DMF. Compounds 2a–i are formed via the dimerization of two molecules of unsaturated ketones 1a–i proceeding as the [2+4] cycloaddition through the formation of intermediate spiro adducts. The further Pfitzinger rearrangement, decarboxylation, and heteroaromatization
摘要 6-Aroyl-7-arylindolo[3,4-jk]phenanthridin-5(4H)-ones (2a–i) 通过加热 3-(2-aryl-2-oxoethylidene)-2,3-dihydroindol-2 合成DMF 中的 -ones (1a–i)。化合物 2a-i 是通过两个分子的不饱和酮 1a-i 的二聚化形成的,该过程作为 [2+4] 环加成反应通过中间螺加合物的形成进行。进一步的 Pfitzinger 重排、脱羧和杂芳构化得到化合物 2a-i。反应产物的结构是通过光谱方法和X射线衍射确定的。