Synthesis and NMR structural study of furoquinolines and naphthofurans from quinones and a 1-azadiene
作者:Pascal Nebois、Houda Fillion、Leila Benameur、Bernard Fenet、Jean-Louis Luche
DOI:10.1016/s0040-4020(01)80179-4
日期:1993.1
The ability of 2-ethoxybut-2-enal N,N-dimethylhydrazone to give with quinoline 5,8-diones or 1,4-naphtho-quinones, either a [4+2] cycloaddition in a neutral medium or a [3+2] process in the presence of trifluoroacetic acid is described. A 2D 1H-13C HMBC and 1D 1H NOE DIFF study is made in order to confirm the structures.
2-乙氧基丁-2-烯醛N,N-二甲基hydr与喹啉5,8-二酮或1,4-萘醌生成中性介质中[4 + 2]环加成或[3+]的能力[2]描述了在三氟乙酸存在下的方法。为了确定结构,进行了2D 1 H- 13 C HMBC和1D 1 H NOE DIFF研究。