One‐Pot Oxidative Heteroannulations ofN‐Sulfonylanilines with Styrenes for the Construction of 5‐Aminocoumaran Derivatives
摘要:
AbstractAn efficient one‐pot oxidative heteroannulation of N‐sulfonylaniline derivatives with styrene derivatives for the rapid construction of 5‐aminocoumaran derivatives is reported. Copper trifluoromethanesulfonate was found to be an excellent catalyst for the oxidative heteroannulation reactions with low reactive styrenes.
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。