Access to 3-Acyl-(2H)-indazoles via Rh(III)-Catalyzed C–H Addition and Cyclization of Azobenzenes with α-Keto Aldehydes

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• 作者：Taejoo Jeong ; Sang Hoon Han ; Sangil Han ; Satyasheel Sharma ; Jihye Park ; Jong Suk Lee ; Jong Hwan Kwak ; Young Hoon Jung ; In Su Kim
• 刊名：Organic Letters
• 出版年：2016
• 出版时间：January 15, 2016
• 年：2016
• 卷：18
• 期：2
• 页码：232-235
• 全文大小：440K
• ISSN：1523-7052

文摘

The rhodium(III)-catalyzed direct C–H functionalization of azobenzenes with ethyl glyoxalate and aryl glyoxals is described. This protocol provides the facile and efficient formation of various C3-acylated-(2H)-indazoles in moderate to high yields.