Convenient and efficient access to tri- and tetra-substituted 4-fluoropyridines via a [3 + 2]/[2 + 1] cyclization reaction
aGuangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China
bGuangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
cKey Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
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