Application of the Octacarbonyldicobalt‐Catalyzed Carbonylation of Ethyl Diazoacetate for the One‐Pot Synthesis of <i>N</i>‐<i>tert</i>‐Butyl‐<i>trans</i>‐α‐ethoxycarbonyl‐β‐phenyl‐β‐lactam
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