Abstract
AbstractAlthough the synthesis of allenes has made considerable progress, methods for tetrasubstituted allenes are still limited. In this paper, the CuBr2‐catalyzed cross‐coupling reaction of Grignard reagents and propargylic ammonium salts in tetrahydrofuran at 60 °C under argon delivered tetrasubstituted allenes in good to excellent yields. The reaction is thought to proceed by an SN2′ pathway.
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