Copper- or Nickel-Enabled Oxidative Cross-Coupling of Unreactive C(sp)-H Bonds with Azole C(sp)-H Bonds: Rapid Access to β-Azolyl Propanoic Acid Derivatives.

Org Lett

Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China.

Published: September 2017

β-Azolyl propanoic acid derivatives are frequently found in biologically active molecules and pharmaceuticals. Here, we report the oxidative heteroarylation of unactivated C(sp)-H bonds with azole C(sp)-H bonds via copper or nickel catalysis with the aid of removable bidentate auxiliary, which provides a rapid pathway to β-azolyl propanoic acid derivatives. A variety of azoles such as oxazole, benzoxazole, thiazole, benzothiazoles, benzimidazole, purine, and even [1,2,4]triazolo[1,5-a]pyrimidine could be engaged in this protocol.

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http://dx.doi.org/10.1021/acs.orglett.7b02265DOI Listing

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