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We herein describe the evolution of a rapid, high‐yielding synthesis of the erythrina alkaloid 3‐demethoxyerythratidinone. The natural product is assembled in six steps from commercial precursors in 30–35 % overall yield and with only two chromatographical purification operations. The key step is a titanium(III) catalyzed umpolung reaction in form of a reductive imine–nitrile coupling that can be...
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