Automated One-pot Library Synthesis with Aldehydes as Radical Precursors

The increased demand for the synthesis of enriched hybridized Csp3 motifs and the urgency of discovering new drug molecules require the development of more efficient technologies and synthetic tools to accelerate drug discovery processes. Herein, we report a fully automated strategy for the addition of Csp3 enriched building blocks onto olefins via Giese addition to forge Csp3-Csp3 bonds. The developed fully automated protocol allowed the conversion of aldehydes (non-redox-active species) in-situ to electroactive imidazolidines and to employ them as precursors of C-centered radicals under photoredox catalyzed conditions for the synthesis of enriched fraction sp3 (Fsp3) character building blocks and bioactive compound libraries.

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