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Enantioselective Synthesis of Chiral 2,2-Difluoro-spiro[indene- [1,3,4]oxadiazines] by NHC-Catalyzed [4 + 2]

Dan Li1, Fen Gao1, You-Quan Zhu1

  • 1School of Ethnic Medicine, Yunnan Minzu University Kunming, 650500, China.

Organic Letters
|February 18, 2026
PubMed

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