Journal
JOURNAL OF CATALYSIS
Volume 404, Issue -, Pages 451-461Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2021.10.020
Keywords
Homogeneous Hydrogenation; Tungsten; Quinolines; Metal Carbonyls; Hydride Complexes
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Funding
- Linz Institute of Technology [LIT-2019-8-SEE-113]
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This study reports a simple catalytic method for the hydrogenation of quinolines using a tungsten precursor. The method is operationally simple and avoids the use of expensive and oxygen-sensitive phosphine ligands and auxiliary hydride reagents.
We report on an operationally simple catalytic method for the tungsten-catalyzed hydrogenation of quinolines through the use of the easily handled and self-contained precursor [WCl(eta(15)-Cp)(CO)(3)]. This half sandwich complex is indefinitely storable on the bench in simple screw-capped bottles or stoppered flasks and can, if required, be prepared on a multi-gram scale while the actual catalytic transformations were performed in the presence of a Lewis acid in order to achieve both decent substrate conversions and product yields. The described method represents a facile and atom-efficient access to a variety of 1,2,3,4-tetrahydroquinolines that circumvents the use of cost-intensive and oxygen-sensitive phosphine ligands as well as auxiliary hydride reagents. (C) 2021 The Author(s). Published by Elsevier Inc.
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