Oxidative dual C–H sulfenylation: A strategy for the synthesis of bis (imidazo [1, 2-a]pyridin-3-yl)sulfanes under metal-free conditions using sulfur powder
a School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
b Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
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