Annulation of enaminones with quinonediimides/quinoneimides for selective synthesis of indoles and 2-aminobenzofurans
作者:Zukang Zhong、Lihua Liao、Yunyun Liu、Ming Zhang、Jie-Ping Wan
DOI:10.1039/d3cc01687k
日期:——
The annulation reactions of enaminones with quinonediimides/quinoneimides for the selective synthesis of indoles and 2-aminobenzofurans have been realized. With Zn(II) catalysis, quinonediimides reacted with enaminones to give indoles via HNMe2-elimination-based aromatization. With Fe(III) catalysis, the reactions of quinoneimides with enaminones provided 2-aminobenzofurans via a key dehydrogenative
实现了烯胺酮与醌二亚胺/醌亚胺的环化反应选择性合成吲哚和 2-氨基苯并呋喃。在 Zn( II ) 催化下,醌二亚胺与烯胺酮反应,通过基于HNMe 2消除的芳构化反应生成吲哚。在 Fe( III ) 催化下,醌亚胺与烯胺酮的反应通过关键的脱氢芳构化反应提供 2-氨基苯并呋喃。
Reactions of N-aryl(methyl, trifluoromethyl)sulfonyl-1,4-benzoquinone monoimines with sodium sulfinates
作者:A. P. Avdeenko、S. A. Konovalova、O. N. Mikhailichenko、S. V. Shelyazhenko、V. V. Pirozhenko、L. M. Yagupol’skii
DOI:10.1134/s107042801202011x
日期:2012.2
In reactions with sodium sulfinates of N-substituted 1,4-benzoquinone monoimines with the quinoid ring having free positions 2 and/or 6 the fraction of products of 1,4-addition of the sulfinate ion grows in the series ArSO2 -> MeSO2 -> CF3SO2. In the case of 2,6-dimethyl derivatives the 1,6-addition is preferable, and the amount of products of 6,1-addition decreases.
Synthesis and thiocyanation of N-alkyl(trifluoromethyl)sulfonyl 1,4-benzoquinone monoimines
作者:A. P. Avdeenko、S. A. Konovalova、O. N. Mikhailichenko、S. V. Shelyazhenko、V. V. Pirozhenko、L. M. Yagupol’skii
DOI:10.1134/s1070428011040075
日期:2011.4
New N-alkyl(trifluoromethyl)sulfonyl 1,4-benzoquinone monoimines were synthesized, and their thiocyanation gave 5-alkyl(trifluoromethyl)sulfonylamino-1,3-benzoxathiol-2-ones. An intermediate thiocyanation product, 5-trifluoromethylsulfonylamino-1,3-benzoxathiol-2-imine, was isolated for the first time.