Enantioselective Synthesis of Chiral 2,2-Difluoro-spiro[indene- [1,3,4]oxadiazines] by NHC-Catalyzed [4 + 2] Cyclization Reactions
{{output}}
1,3,4-Oxadiazine derivatives represent an essential class of oxadiazine scaffolds that have demonstrated a wide spectrum of applications in modern drug discovery. However, the efficient and stereoselective construction of chiral 2,2-difluoro-spiro[indene-[1,3,... ...