DABCO-Catalyzed [3+2] Cycloaddition of Isatin-Derived Nitrones and Electron-Deficient Dienes via a 1,6-Addition Reaction
作者:Zhen Wang、Weijun Yao、Zihao Luo
DOI:10.1055/a-1863-3494
日期:2022.10
diastereoselective [3+2] dipolar cycloadditions of isatin-derived nitrone ylides with penta-2,4-dienenitriles have been developed. The reaction proceeds through the organic base DABCO catalyzed 1,6-addition to linear penta-2,4-dienenitriles, followed by the intramolecular cyclization. This procedure is capable of tolerating a relatively wide range of nitrone ylides under mild conditions, facilitating the preparation