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Updated: Jan 9, 2026

A Two-Step Protocol for Umpolung Functionalization of Ketones Via Enolonium Species
Published on: August 16, 2018
Co-MHAT-Catalyzed Wacker-Type Oxidation of 1,3-Enynes into Ynones
Ying Jiang1,2, Wen-Chao Zhao1,2, Kai Xiao1,2
1Key Laboratory of Glyco-drug Research of Zhejiang Province, School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China.
None:
The transformation of 1,3-enynes is one of the important methods for obtaining a variety of valuable organic molecules. In the past few decades, significant progress has been made in the difunctionalization of 1,3-enynes via a radical process. However, the hydrofunctionalization of 1,3-enynes has been studied less. Herein, we describe the first example of reductive Co-MHAT-catalyzed Wacker-type oxidation of 1,3-enynes under air conditions with Markovnikov regioselectivity. Valuable conjugated ynones were obtained from the readily available starting material. Furthermore, a broad substrate scope with good functional group compatibility, simple operation, mild conditions, diverse downstream transformations, and excellent late-stage modifications demonstrated this method has significant advantages in practical utility.
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