Rapid Synthesis of Highly Substituted 1,6-Naphthyridines Via Heteroaryl Ditriflates

J Org Chem. 2024 Aug 2;89(15):10912-10918. doi: 10.1021/acs.joc.4c01248. Epub 2024 Jul 20.

Abstract

We report the discovery of a convenient and efficient method for the synthesis of highly substituted 1,6-naphthyridines. A tandem nitrile hydration/cyclization procedure was developed to access 1,6-naphthyridine-5,7-diones under mild conditions. Subsequently, we have found that ditriflation of these intermediates provides 1,6-naphthyridine-5,7-ditriflates which are bench-stable but highly reactive intermediates that can be engaged in one-pot difunctionalization reactions leading to diverse drug-like products in rapid fashion.