Cobalt catalyzed electrochemical [4 + 2] annulation for the synthesis of sultams

• Published in: Green chemistry : an international journal and green chemistry resource : GC Vol. 22; no. 5; pp. 1548 - 1552
• Main Authors: Cao, Yangmin, Yuan, Yong, Lin, Yueping, Jiang, Xiaomei, Weng, Yaqing, Wang, Tangwei, Bu, Faxiang, Zeng, Li, Lei, Aiwen
• Format: Journal Article
• Language: English
• Published: CAMBRIDGE Royal Soc Chemistry 09.03.2020; Royal Society of Chemistry
• Subjects: Alkynes; Anodizing; Catalysts; Chemical reactions; Chemistry; Chemistry, Multidisciplinary; Cobalt; Electrochemistry; Green & Sustainable Science & Technology; Green chemistry; Organic chemistry; Oxidants; Oxidation; Oxidizing agents; Physical Sciences; Science & Technology; Science & Technology - Other Topics; Sulfonamides; OXIDATIVE CROSS-COUPLING/CYCLIZATION; REARRANGEMENT; ALKENES; OLEFINATION; PYRROLIDINES; ARYL SULFONAMIDES; 1,1-DIOXIDES; ALKYNES; C-H ACTIVATION; ACCESS

Cobalt catalyzed electrochemical [4 + 2] annulation of sulfonamides with alkynes is demonstrated in this work, which provided a practical and environmentally friendly way to synthesize structurally diverse sultams. Notably, by employing anodic oxidation in an undivided cell to recycle the cobalt cat...