PPh3‐Catalyzed Ring‐Expansion Reactions of Sulfamate‐Derived Cyclic Imines with Acetylenedicarboxylates |
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| Authors: | Zhilin Yang Hao Yu Lei Zhang Hang Wei Dr. Yumei Xiao Lanzhen Chen Dr. Hongchao Guo |
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| Affiliation: | 1. Department of Applied Chemistry, Institution China Agricultural University, 2 West Yuanmingyuan Road, Beijing 100193 (China), Fax: (+86)?10‐6281‐5579;2. Bee Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100093, China |
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| Abstract: | The PPh3‐catalyzed ring‐expansion reaction of sulfamate‐derived cyclic imines with acetylenedicarboxylates has been developed. The reaction works quite efficiently under very mild conditions to afford benzo[g][1,2,3]oxathiazocine‐4,5‐dicarboxylate 2,2‐dioxide derivatives in high yields. |
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| Keywords: | heterocycles imines organocatalysis ring expansion synthetic methods |
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