Abstract
Concise routes to five pharmacologically relevant bis-heterocyclic scaffolds are described. Significant molecular complexity is generated in a mere two synthetic operations enabling access to each scaffold. Routes are often improved by microwave irradiation and all utilize isocyanide-based multi-component reaction methods to incorporate the required diversity elements. Common reagents in all initial condensation reactions include 2-(N-Boc-amino)-phenyl-isocyanide 1, mono-Boc-phenylenediamine 2 and ethyl glyoxalate 3.
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Xu, Z., Shaw, A.Y., Nichol, G.S. et al. Applications of ortho-phenylisonitrile and ortho-N-Boc aniline for the two-step preparation of novel bis-heterocyclic chemotypes. Mol Divers 16, 607–612 (2012). https://doi.org/10.1007/s11030-012-9374-1
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DOI: https://doi.org/10.1007/s11030-012-9374-1