Add time:07/26/2019         Source:sciencedirect.com

CuI-catalyzed coupling of 2-bromobenzylamines and α-amino acids and subsequent condensative cyclization (directly or mediated with DPPA) provides 1,4-benzodiazepin-3-ones in moderate yields. Using l-proline and l-valine as the starting materials enantiopure products are obtained although partial racemization occurs for other amino acids.

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