6-quinolinylamine condensation with aldehydes and methyl 2,2-dimethyl-4,6-dioxocyclohexanecarboxylate
作者:N. G. Kozlov、A. B. Tereshko
DOI:10.1134/s1070428009080077
日期:2009.8
A condensation of methyl 2,2-dimethyl-4,6-dioxocyclohexanecarboxylate with 6-quinolinylamine and aldehydes of aromatic (heteroaromatic, alicyclic) series gave rise to new derivatives of 4,7-phenanthroline. The condensation in ethanol proceeded regioselectively and with a high extent of stereoselectivity leading to the formation of a mixture of cis- and trans- methyl 9,9-dimethyl-12-aryl (heteryl,
2,2-二甲基-4,6-二氧环己烷甲酸甲酯与6-喹啉胺和芳香族(杂芳香族,脂环族)醛的缩合反应生成新的4,7-菲咯啉衍生物。乙醇中的缩合反应具有区域选择性,并且具有很高的立体选择性,导致形成顺式和反式甲基9,9-二甲基-12-芳基(杂基,环己烯基)-11-oxo-7,8的混合物, 9,10,11,12-六氢苯并[ b ] -4,7-菲咯啉-10-羧酸盐。在更严格的条件下,该过程的区域选择性和立体选择性均降低,导致形成8-和10-甲氧基羰基衍生物的混合物(约1:2),并在混合物中部分增加了顺式异构体的分数。