An efficient copper-catalyzed method for the synthesis of quinolinones, pyridinones, and heteroannulated pyridinones via cascade reactions of substituted 2-iodo-, 2-bromo-, and 2-chlorobenzocarbonyls with 2-arylacetamides is reported. The protocol works well for the reaction of most of the 2-iodo-, 2-bromo- and 2-chlorobenzocarbonyls with 2-arylacetamides. copper iodide - diamines - cascade reactions
N-Iminopyridinium ylide-directed, cobalt-catalysed coupling of sp<sup>2</sup> C–H bonds with alkynes
作者:Se Hun Kwak、Olafs Daugulis
DOI:10.1039/d0cc05294a
日期:——
N-Iminopyridinium ylides are used as directing groups and internal oxidants for cobalt-catalysed annulation of sp2 C–H bonds with internal alkynes. The reactions possess excellent compatibility with heterocyclic substrates.