Metal-Free Method for Direct Synthesis of Functionalized β-Ketoenamines.

J Org Chem

Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry , Tsinghua University, Beijing 100084 , P. R. China.

Published: March 2019

A new method for direct synthesis of β-ketoenamines was developed by a BF·OEt-catalyzed cyclization of 1-iodoalkyne and α-keto acid followed by an amine-mediated ring-opening in one pot. Its metal-free conditions allowed the easy synthesis of those products bearing the transition metal-sensitive functional groups. Its three-component process achieved wide range of functionalized products.

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http://dx.doi.org/10.1021/acs.joc.8b03247DOI Listing

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