Ru(II)‐Catalyzed Selective C—H Alkynylation of Isoquinolones, Quinazolones and Phthalazinones with Bromoalkynes

Comprehensive SummaryA new, selective Ru(II)‐catalyzed alkynylation reaction of isoquinolones, quinazolones and phthalazinones with readily available bromoalkynes has been developed. This reaction enables the selective construction of a new C(sp2)‐C(sp) bond through C—H activation and C—Br functionalization, and offers an effective and selective route to synthesizing highly valuable alkynylated isoquinolone, quinazolone and phthalazinone derivatives with a wide substrate scope and high selectivity.