Litcius/Paper detail

Synthesis of 6<i>H-</i>Benzo[<i>c</i>]chromene Scaffolds from <i>O</i>-Benzylated Phenols through a C–H Sulfenylation/Radical Cyclization Sequence

Steve Karreman, Simon B. H. Karnbrock, Sebastian Kolle, Christopher Golz, Manuel Alcarazo

2021Organic Letters35 citationsDOIOpen Access PDF

Abstract

bond. Mechanistic studies reveal that this initial radical species cyclizes following a kinetically favored 5-exo-trig pathway. Subsequent ring expansion, favored by rearomatization, delivers the desired tricyclic systems.

Topics & Concepts

ChemistrySulfoniumRegioselectivityArylPhenolsBond cleavageRing (chemistry)Cleavage (geology)Medicinal chemistryTricyclicAryl radicalRadical ionRadicalStereochemistrySalt (chemistry)Organic chemistryCatalysisIonAlkylEngineeringGeotechnical engineeringFracture (geology)Sulfur-Based Synthesis TechniquesRadical Photochemical ReactionsCatalytic C–H Functionalization Methods
Synthesis of 6<i>H-</i>Benzo[<i>c</i>]chromene Scaffolds from <i>O</i>-Benzylated Phenols through a C–H Sulfenylation/Radical Cyclization Sequence | Litcius