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Letters in Organic Chemistry

Editor-in-Chief

ISSN (Print): 1570-1786
ISSN (Online): 1875-6255

A New Synthesis of Benzoazacrown Ethers Through Pd-Catalyzed Intramolecular Cycloamination Reactions

Author(s): Rafik Omar-Amrani, Raphael Schneider and Yves Fort

Volume 4, Issue 5, 2007

Page: [322 - 324] Pages: 3

DOI: 10.2174/157017807781212058

Price: $65

Abstract

A new synthesis of twelve-, fifteen-, and eighteen-membered benzoazacrown ethers using palladium-catalyzed intramolecular amination is reported. Couplings proceeded in good yields using an in situ generated Pd(0) catalyst associated to N,N-bis(2,6-diisopropylphenyl)dihydroimidazol-2-ylidene (SIPr) as ligand and t-BuONa as the base.

Keywords: Intramolecular aryl amination, Pd(0) catalyst, N-heterocyclic carbene, benzoazacrown ethers


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