Janatian Ghazvini H, Müller TJJ, Rominger F, Balalaie S. Highly Substituted Medium-Sized Ring-Fused Azocinoquinoline Scaffolds by Post-Ugi-4CR Reductive Carbopalladation Cyclization.
J Org Chem 2019;
84:10740-10748. [PMID:
31359755 DOI:
10.1021/acs.joc.9b01269]
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Abstract
A concise synthesis of quinoline-fused eight-membered rings from simple starting materials is described. Reductive cyclo-carbopalladation of suitable Ugi-4CR substrates as a key step leads to the regio- and diastereoselective formation of 1,2-dihydroazocino[4,3-b]quinolin-3-ones under mild reaction conditions with good yields in short reaction time.
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