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Cumyl: A Better N-Protecting Group of α-Diazo Acetamides for Intra­molecular C-H Insertion Reaction and its Application in the Synthesis of ­Pregabalin and 3-Benzyloxy Pyrrolidine

Zhenliang Chen, Zhiyong Chen, Yaozhong Jiang, Wenhao Hu*
Key Laboratory of Asymmetric Synthesis and Chirotechnology of Sichuan Province and Union Laboratory of Asymmetric Synthesis, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. China
Fax: +86(28)85229250; e-Mail: huwh@cioc.ac.cn;