Frontispiece: A Visible Light Photocatalytic Cross‐Dehydrogenative Coupling/Dehydrogenation/6π‐Cyclization/Oxidation Cascade: Synthesis of 12‐Nitroindoloisoquinolines from 2‐Aryltetrahydroisoquinolines

Abstract

Cross‐Dehydrogenative Coupling The photocatalytic C1‐functionalization of 2‐aryltetrahydroisoquinolines by cross‐dehydrogenative coupling with nitroalkanes is a well‐established method for the preparation of 1‐nitroalkyl‐2‐aryl‐tetrahydroisoquinolines. In their Communication on , M. Brasholz et al. describe that these primary coupling products readily undergo a subsequent oxidative cascade cyclization to furnish 12‐nitroindolo[2,1‐a]isoquinoline derivatives. Key to this hitherto unreported one‐pot transformation is the presence of a base, such as K3PO4 and aminoanthraquinones emerged as the ideal organic photocatalysts.

Recycling of brush polymer containing iridium photocatalyst supported on glass balls

“…S17) at the end of the photocatalysis showed the formation of the expected CDC compound 9 and, in some case, an unreported by-product 10 identified as a nitrile derivative 48 and an already observed by-product identified as the lactam 11 (Scheme 2). 49 To have a better understanding of all these processes, electrochemical analysis and kinetics were undertaken. Cyclic voltammetry was initially performed on GS-Ir(III) material but did not furnish satisfying results.…”