J Am Chem Soc 2020 06 27;142(23):10485-10493. Epub 2020 May 27.
Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
Geminal diboronates have attracted significant attention because of their unique structures and reactivity. However, benzofuran-, indole-, and benzothiophene-based benzylic -diboronates, building blocks for biologically relevant compounds, are unknown. A promising protocol using visible light and aryl iodides for constructing valuable building blocks, including benzofuran-, indole-, and benzothiophene-based benzylic -diboronates, via radical carbo-cyclization/-diborylation of alkynes with a high functional group tolerance is presented. Read More