Nucleophilic Iron Complexes in Proton-Transfer Catalysis: An Iron-Catalyzed Dimroth Cyclocondensation

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Aslihan Baykal - , Universität Stuttgart (Autor:in)
  • Dihan Zhang - , Universität Stuttgart (Autor:in)
  • Jakob Knelles - , Universität Stuttgart (Autor:in)
  • Isabel T. Alt - , Universität Stuttgart (Autor:in)
  • Bernd Plietker - , Universität Stuttgart (Autor:in)

Abstract

The nucleophilic iron complex Bu4N[Fe(CO)3(NO)] (TBA[Fe]) is an active catalyst in C−H-amination but also in proton-transfer catalysis. Herein, we describe the successful use of this complex as a proton-transfer catalyst in the cyclocondensation reaction between azides and ketones to the corresponding 1,2,3-triazoles. Cross-experiments indicate that the proton-transfer catalysis is significantly faster than the nitrene-transfer catalysis, which would lead to the C−H amination product. An example of a successful sequential Dimroth triazole–indoline synthesis to the corresponding triazole-substituted indolines is presented.

Details

OriginalspracheEnglisch
Seiten (von - bis)3003-3010
Seitenumfang8
FachzeitschriftChemistry - an Asian journal
Jahrgang14
Ausgabenummer17
PublikationsstatusVeröffentlicht - 2 Sept. 2019
Peer-Review-StatusJa
Extern publiziertJa

Externe IDs

PubMed 31310438
ORCID /0000-0001-8423-6173/work/161891580

Schlagworte

ASJC Scopus Sachgebiete

Schlagwörter

  • cyclocondensation–C−H-amination, Dimroth cyclocondensation, homogeneous catalysis, iron, triazoles