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New iridium catalysts for the selective alkylation of amines by alcohols under mild conditions and for the synthesis of quinolines by acceptor-less dehydrogenative condensation

Title data

Ruch, Susanne ; Irrgang, Torsten ; Kempe, Rhett:
New iridium catalysts for the selective alkylation of amines by alcohols under mild conditions and for the synthesis of quinolines by acceptor-less dehydrogenative condensation.
In: Chemistry : a European Journal. Vol. 20 (2014) Issue 41 . - pp. 13279-13285.
ISSN 1521-3765
DOI: https://doi.org/10.1002/chem.201402952

Abstract in another language

A novel family of iridium catalysts stabilised by P,N-ligands have been introduced. The ligands are based on imidazo1,5-bpyridazin-7-amines and can be synthesised with a broad variety of substitution patterns. The catalysts were synthesised quantitatively from the protonated ligands and a commercially available iridium precursor. The catalysts mediate the alkylation of amines by alcohols under mild conditions (70 °C). In addition, the synthesis of quinolines from secondary or primary alcohols and amino alcohols is reported. This sustainable synthesis proceeds through the liberation of two equivalents of water and two equivalents of dihydrogen. The investigations indicate that catalysts suitable for hydrogen autotransfer or borrowing hydrogen chemistry might also be suitable for acceptor-less dehydrogenative condensation reactions.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Anorganic Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Anorganic Chemistry II > Chair Anorganic Chemistry II - Univ.-Prof. Dr. Rhett Kempe
Result of work at the UBT: Yes
DDC Subjects: 500 Science
500 Science > 500 Natural sciences
500 Science > 540 Chemistry
Date Deposited: 10 Mar 2015 10:31
Last Modified: 10 Mar 2015 10:31
URI: https://eref.uni-bayreuth.de/id/eprint/7413