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Polysubstituted 5-Functionalized 2-Pyrone Derivatives: Facile Synthesis via Tandem Nucleophilic Addition/Lactonization Reaction of 1,2-Allenyl Esters

Xian Huang*a,b, Ruwei Shena
a Department of Chemistry, Zhejiang University (Xixi Campus), Hangzhou 310028, P. R. of China
b State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. of China
Fax: +86(571)88807077; e-Mail: huangx@mail.hz.zj.cn;