Expedited Aminoglutarimide C–N Cross-Coupling Enabled by High-Throughput Experimentation

Abstract

A simple protocol for the Buchwald–Hartwig cross-coupling of (hetero)aryl halides with unprotected aminoglutarimide to afford diverse cereblon binding motifs is disclosed. The development of this C–N cross-coupling method was enabled by high-throughput combinatory screening of solvents, bases, temperatures, and ligands. Scope studies revealed generality across various heteroaryl and aryl halides with the reaction proceeding under mild conditions. In comparison, this method demonstrated strategic superiority over previously reported approaches, as evidenced by a significant decrease in step count from known syntheses in the patent literature.