α‐Chiral Acetylenes Having an All‐Carbon Quaternary Center: Phase Transfer Catalyzed Enantioselective α Alkylation of α‐Alkyl‐α‐alkynyl Esters
作者： Takuya Hashimoto , Kazuki Sakata , Keiji Maruoka
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摘要: Ein mehrphasiger Prozess: Untersuchungen der Titelreaktion ergaben, dass sie als basenvermittelte Isomerisierung zu Allenylester und anschliesende phasentransferkatalysierte Alkylierung an α-Position des Esters verlauft (siehe Schema).
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