Thermal-Induced Synthesis of Cyclobute[b]indolines via Intramolecular Formal [2+2] Cycloaddition of Enamines and Triazole-Derived Ketenimines,Advanced Synthesis & Catalysis

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Thermal-Induced Synthesis of Cyclobute[b]indolines via Intramolecular Formal [2+2] Cycloaddition of Enamines and Triazole-Derived Ketenimines
Advanced Synthesis & Catalysis ( IF 4.4 ) Pub Date : 2024-06-24 , DOI: 10.1002/adsc.202400478
Huan Luo ₁ , Han Wang ₁ , Wenzheng Zhang ₁ , Zefeng Xu ₁ , Shengguo Duan ₁ , Chuan-Ying Li ₁

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A de novo synthesis of cyclobutene-fused indoline derivatives via thermally induced intramolecular cyclization was reported. This approach efficiently yields valuable high-strained cyclobute[b]indolines in moderate to high yields and enables further transformation into other valuable heterocycles, demonstrating its potential in organic synthesis.

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