Synthesis 2013; 45(6): 777-784
DOI: 10.1055/s-0032-1318307
paper
© Georg Thieme Verlag Stuttgart · New York

N-Arylation of Protected Azamacrocycles

Alberte X. Veiga
Department of Chemistry and Molecular Biology, University of Gothenburg, 412 96 Gothenburg, Sweden   Fax: +46(31)7721394    Email: mate@chem.gu.se
,
Sven Arenz
Department of Chemistry and Molecular Biology, University of Gothenburg, 412 96 Gothenburg, Sweden   Fax: +46(31)7721394    Email: mate@chem.gu.se
,
Máté Erdélyi*
Department of Chemistry and Molecular Biology, University of Gothenburg, 412 96 Gothenburg, Sweden   Fax: +46(31)7721394    Email: mate@chem.gu.se
› Author Affiliations
Further Information

Publication History

Received: 27 December 2012

Accepted after revision: 02 February 2013

Publication Date:
18 February 2013 (online)


Abstract

A rapid method for efficient palladium-catalyzed N-aryl­ation of polynitrogenated macrocycles is presented. Its applicability for functionalization of protected azamacrocycles of various sizes with substituted aryl bromides of optional electronic properties is demonstrated. The compatibility of the protocol with common N-protecting schemes as well as the impact of electronic versus steric factors is discussed. Using a commercially available catalytic system and easily available alkoxide or phenoxide base, the method provides moderate to excellent yields of N-arylated azamacrocycles (45–96%).

Supporting Information