Cross Dehydrogenative Coupling of SF<sub>4</sub>-Alkyne with Tetrahydroisoquinolines
作者:Arvind Kumar Yadav、Putri Nur Arina Mohd Ariff、Koki Kawai、Seishu Ochiai、Srikanth Reddy Narra、Norio Shibata
DOI:10.1021/acs.orglett.4c00080
日期:2024.2.23
This study introduces a dual-catalytic method for cross-dehydrogenative coupling (CDC) between tetrahydroisoquinolines and Py-SF4-alkyne using visible-lightphotoredoxcatalysis. This protocol enables selective C(sp3)–H alkynylation, expanding the synthetic toolkit for SF4-based molecules. Demonstrating efficiency and substrate versatility, this approach opens new avenues in hexacoordinated tetrafluorinated
organic electron donor (OED), the reduction of “push–pull” C–C single bond and reductivedecyanation of tetrahydroisoquinolines were realized. These reactions exhibited higher reaction efficiency and better functional group tolerance compared with those of metallic reductants, and the mechanistic study indicated that a radicalintermediate was involved in the reduction of the C–C single bond, which provides