Rhodium-Catalyzed Thiolation of Azobenzenes

  • ChemPubSoc Europe Logo
  • Author: ChemViews Magazine
  • Published Date: 11 January 2018
  • Source / Publisher: Asian Journal of Organic Chemistry/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
thumbnail image: Rhodium-Catalyzed Thiolation of Azobenzenes

Azobenzenes with thiol substituents are common in natural products, functional materials, and bioactive compounds. There are some selective reactions for the thiolation of indolines or ketazines and extending these reactions to azobenzenes would be useful.


Xiangge Zhou, Sichuan University, Chengdu, China, and colleagues have developed a direct Rh-catalyzed ortho-C–H activation and functionalization of azobenzenes with diaryl disulfides. The team used [Cp*RhCl2]2 (Cp* = pentamethylcyclopentadienyl) as the catalyst, AgBF4 as an oxidant, and dichloroethane (DCE) as the solvent. Using this approach, a broad range of azobenzenes were thiolated with high regioselectivity to form mono-ortho-substituted products in moderate to excellent yields.


The reaction tolerates a variety of functional groups and the catalyst system could also be used to synthesize benzothiophenes and selenylated compounds.


 

Article Views: 389

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH