ChemInform Abstract: Triflic Anhydride Mediated Ring-Opening/Recyclization Reaction of α-Carbamoyl α-Oximyl Cyclopropanes with DMF: Synthetic Route to 5-Aminoisoxazoles.

Mangfei Yu,Qian Zhang,Jia Wang,Peng Huang, Pengfei Yan,Rui Zhang,Dewen Dong

ChemInform（2016）

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摘要

A facile and efficient synthesis of fully substituted 5-aminoisoxazoles was developed from α-cyclopropyl β-oximyl amides in the presence of triflic anhydride (Tf2O) in DMF under very mild conditions. The process involves sequential ring-opening and intramolecular cyclization reactions.

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关键词

cyclopropanes,ring-opening/recyclization reaction

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