Molecular Diversity of Tonghaosu Analogues, Selective Oxidation of the exo-Cyclic Double Bond of Spiroacetal Enol Ethers and Diasteroselective Synthesis of Spiro-Pyranone
作者:Biaolin Yin、Jinqiang Lai、Zeren Zhang、Yulin Wu
DOI:10.1002/cjoc.201190000
日期:2010.12
Two methods including NBS/AgNO3 system and MCPBA oxidation have been developed for the selectiveoxidations of the exo‐cyclic doublebond of spiroacetalenolethers 2 with multi reactive sites into spiro‐pyanones 3 and 4. In addition, possible mechanisms for these conversions are proposed.