Yong Yuan, Xincong Liu, Feng Zhang, Chunyan Bai, Yuyan Tao, Xiazhen Bao, Dongsheng Ji and Congde Huo
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引用次数: 0
Abstract
A metal- and oxidizing reagent-free electrochemical dehydrogenative annulation of enamides with O-nucleophiles has been developed, leading to a series of 4-oxo-oxazolines under environmentally friendly conditions. The present method demonstrates broad substrate scope and wide functional group tolerance. In addition to water, alcohols and carboxylic acids were also competent reaction partners. The merit of this electrochemical protocol has also been demonstrated by the gram-scale reaction and the synthesis of 2-(3,4-dimethoxyphenyl)-5-methyl-4,5-dihydrooxazol-4-ol (an antitumor nature product precursor). The mechanistic results suggest that the formation and homolytic cleavage of the N–Br bond is key to the success of this electrochemical dehydrogenative annulation reaction.
期刊介绍：
Green Chemistry is a journal that provides a unique forum for the publication of innovative research on the development of alternative green and sustainable technologies. The scope of Green Chemistry is based on the definition proposed by Anastas and Warner (Green Chemistry: Theory and Practice, P T Anastas and J C Warner, Oxford University Press, Oxford, 1998), which defines green chemistry as the utilisation of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products. Green Chemistry aims to reduce the environmental impact of the chemical enterprise by developing a technology base that is inherently non-toxic to living things and the environment. The journal welcomes submissions on all aspects of research relating to this endeavor and publishes original and significant cutting-edge research that is likely to be of wide general appeal. For a work to be published, it must present a significant advance in green chemistry, including a comparison with existing methods and a demonstration of advantages over those methods.
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