Lithium bis-catechol borate as an effective reductive quencher in photoredox catalysis
作者:Martin J. Sevrin、Laura Furst、John D. Nguyen、James L. Collins、Corey R.J. Stephenson
DOI:10.1016/j.tet.2018.04.053
日期:2018.6
the photoredox mediated intermolecular C-H functionalization of various heteroaromatics with bromopyrroloindolines is described. LiB(cat)2 offers a financial benefit over state-of-the-art quenchers currently in use while eliminating the side reactions that typically plague these couplings. The advantage of this methodology is highlighted by the synthesis of C3-C2' (-) gliocladin C. Furthermore, additional
Visible Light-Mediated Intermolecular C−H Functionalization of Electron-Rich Heterocycles with Malonates
作者:Laura Furst、Bryan S. Matsuura、Jagan M. R. Narayanam、Joseph W. Tucker、Corey R. J. Stephenson
DOI:10.1021/ol101146f
日期:2010.7.2
The photoredox-mediated direct intermolecular C−Hfunctionalization of substituted indoles, pyrroles, and furans with diethyl bromomalonate is described, utilizing the visible light-induced reductive quenching pathway of Ru(bpy)3Cl2. An analysis of reductive quenchers and mechanistic considerations has led to an optimized protocol for the heteroaromatic alkylations, providing products in good yields
Herein, we report the denovosynthesis and characterization of a series of substituted bithiophene derivatives as novel and inexpensive organic photocatalysts.