Iron-catalyzed intermolecular cycloaddition of diazo surrogates with hexahydro-1,3,5-triazines. 2017

Pei Liu, and Chenghao Zhu, and Guangyang Xu, and Jiangtao Sun
Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, and the School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China. jtsun@cczu.edu.cn jtsun08@gmail.com.

We report here an unprecedented iron-catalyzed cycloaddition reaction of diazo surrogates with hexahydro-1,3,5-triazines, providing five-membered heterocycles in moderate to high yields under mild reaction conditions. This cycloaddition features C-N and C-C bond formation using a cheap iron catalyst. Importantly, different to our former report on a gold-catalyzed system, both donor/donor and donor/acceptor diazo substrates are tolerated in this iron-catalyzed protocol.

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