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N-containing heteroaromatics, particularly those owning an indole or quinolone substructure, are found in numerous natural or synthetic alkaloids of biological and pharmaceutical relevance. Therefore, various synthetic methodologies have been reported to access these backbones. The most advanced procedures use transition metal catalysts, usually as soluble (homogeneous) materials. In this short review...
A selective one-pot synthesis of carbonyl-containing N-heterocyclic compounds has been developed using a carbonylative Sonogashira/cyclisation sequence. Various catalytic protocols were studied (CO pressure, temperature, catalyst identity, base and substrate/catalyst ratio) with the objective of obtaining selectively either indoxyl or 4-quinolone products. The origin of the selectivity toward the...
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