Abstract
Due to their availability, price and biological relevance, the use of catalysts based on 3d transition metals is of substantial importance for the synthesis of industrial chemicals, but also for organic synthesis in general. Hence in recent years, especially in homogeneous catalysis, the use of such Earth-abundant, biocompatible metals has become a major area of interest. However, to achieve reactivity comparable to that of noble-metal catalysts, generally sophisticated ligands—typically expensive phosphorus derivatives—have to be used. Here, we report the chemoselective reduction of quinolines and related N-heterocycles by molecular hydrogen, using a simple Mn(i) complex [Mn(CO)5Br]. Under very mild reaction conditions this catalytic system is able to reduce a wide range of quinolines, affording high yields of the corresponding tetrahydroquinolines, a scaffold present in many bioactive compounds, including marketed pharmaceuticals. Mechanistic studies reveal the formation of the active catalyst and also show the important role of a concomitantly formed Mn(ii) species and HBr for the hydrogenation of the heterocyclic substrates.
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Data availability
CCDC 1922866 (Mn-2), 1922867 (Mn-3), 1941549 (Mn-4) and 1941550 (2u) (Supplementary Fig. 1) contain the supplementary crystallographic data for this paper. These data can be obtained free of charge from the Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/data_request/cif. Further data that support the plots within this paper and other findings of this study are available from the corresponding author upon reasonable request.
References
Zecchina, A. & Califano, S. The Development of Catalysis: A History of Key Processes and Personas in Catalytic Science and Technology (Wiley, 2017).
Pignolet, L. H. Homogeneous Catalysis with Metal Phosphine Complexes (Springer, 1983).
Klein Gebbink, R. J. M. & Moret, M.-E. Non-Noble Metal Catalysis: Molecular Approaches and Reactions (Wiley, 2019).
Chirik, P. & Morris, R. Getting down to earth: the renaissance of catalysis with abundant metals. Acc. Chem. Res. 48, 2495–2495 (2015).
Study on the Review of the List of Critical Raw Materials (European Commission, 2017).
Hayler, J. D., Leahy, D. K. & Simmons, E. M. A pharmaceutical industry perspective on sustainable metal catalysis. Organometallics 38, 36–46 (2019).
Bullock, R. M. Abundant metals give precious hydrogenation performance. Science 342, 1054–1055 (2013).
Zimmerman, J. B. & Anastas, P. T. The periodic table of the elements of green and sustainable chemistry. Green Chem. https://doi.org/10.1039/C9GC01293A (2019).
Zell, T. & Milstein, D. Hydrogenation and dehydrogenation iron pincer catalysts capable of metal–ligand cooperation by aromatization/dearomatization. Acc. Chem. Res. 48, 1979–1994 (2015).
Werkmeister, S., Neumann, J., Junge, K. & Beller, M. Pincer-type complexes for catalytic (de)hydrogenation and transfer (de)hydrogenation reactions: recent progress. Chem. Eur. J. 21, 12226–12250 (2015).
Junge, K., Papa, V. & Beller, M. Cobalt–pincer complexes in catalysis. Chem. Eur. J. 25, 122–143 (2019).
Liu, W., Sahoo, B., Junge, K. & Beller, M. Cobalt complexes as an emerging class of catalysts for homogeneous hydrogenations. Acc. Chem. Res. 51, 1858–1869 (2018).
Vasudevan, K. V., Scott, B. L. & Hanson, S. K. Alkene hydrogenation catalyzed by nickel hydride complexes of an aliphatic pnp pincer ligand. Eur. J. Inorg. Chem. 2012, 4898–4906 (2012).
Watari, R., Kayaki, Y., Hirano, S.-i, Matsumoto, N. & Ikariya, T. Hydrogenation of carbon dioxide to formate catalyzed by a copper/1,8-diazabicyclo[5.4.0]undec-7-ene system. Adv. Synth. Catal. 357, 1369–1373 (2015).
Jochmann, P. & Stephan, D. W. H2 cleavage, hydride formation, and catalytic hydrogenation of imines with zinc complexes of C5Me5 and N-heterocyclic carbenes. Angew. Chem. Int. Ed. 52, 9831–9835 (2013).
Filonenko, G. A., van Putten, R., Hensen, E. J. M. & Pidko, E. A. Catalytic (de)hydrogenation promoted by non-precious metals – Co, Fe and Mn: recent advances in an emerging field. Chem. Soc. Rev. 47, 1459–1483 (2018).
Martinez-Finley, E. J., Chakraborty, S. & Aschner, M. in Encyclopedia of Metalloproteins (eds Kretsinger, R. H., Uversky, V. N. & Permyakov, E. A.) 1297–1303 (Springer, 2013).
Pan, H. J. et al. A catalytically active [Mn]-hydrogenase incorporating a non-native metal cofactor. Nat. Chem. 11, 669–675 (2019).
Maji, B. & Barman, M. K. Recent developments of manganese complexes for catalytic hydrogenation and dehydrogenation reactions. Synthesis 49, 3377–3393 (2017).
Mukherjee, A. & Milstein, D. Homogeneous catalysis by cobalt and manganese pincer complexes. ACS Catal. 8, 11435–11469 (2018).
Kallmeier, F. & Kempe, R. Manganese complexes for (de)hydrogenation catalysis: a comparison to cobalt and iron catalysts. Angew. Chem. Int. Ed. 57, 46–60 (2018).
Elangovan, S. et al. Selective catalytic hydrogenations of nitriles, ketones, and aldehydes by well-defined manganese pincer complexes. J. Am. Chem. Soc. 138, 8809–8814 (2016).
Freitag, F., Irrgang, T. & Kempe, R. Mechanistic studies of hydride transfer to imines from a highly active and chemoselective manganate catalyst. J. Am. Chem. Soc. 141, 11677–11685 (2019).
Kar, S., Goeppert, A., Kothandaraman, J. & Prakash, G. K. S. Manganese-catalyzed sequential hydrogenation of CO2 to methanol via formamide. ACS Catal. 7, 6347–6351 (2017).
Papa, V. et al. Efficient and selective hydrogenation of amides to alcohols and amines using a well-defined manganese-PNN pincer complex. Chem. Sci. 8, 3576–3585 (2017).
Pena-Lopez, M., Piehl, P., Elangovan, S., Neumann, H. & Beller, M. Manganese-catalyzed hydrogen-autotransfer C–C bond formation: α-alkylation of ketones with primary alcohols. Angew. Chem. Int. Ed. 55, 14967–14971 (2016).
Erken, C. et al. Manganese-catalyzed hydroboration of carbon dioxide and other challenging carbonyl groups. Nat. Commun. 9, 4521 (2018).
Bertini, F. et al. Carbon dioxide reduction to methanol catalyzed by Mn(I) PNP pincer complexes under mild reaction conditions. ACS Catal. 9, 632–639 (2019).
van Putten, R. et al. Non-pincer-type manganese complexes as efficient catalysts for the hydrogenation of esters. Angew. Chem. Int. Ed. 56, 7531–7534 (2017).
Anderez-Fernandez, M. et al. A stable manganese pincer catalyst for the selective dehydrogenation of methanol. Angew. Chem. Int. Ed. 56, 559–562 (2017).
Brzozowska, A. et al. Highly chemo- and stereoselective transfer semihydrogenation of alkynes catalyzed by a stable, well-defined manganese(II) complex. ACS Catal. 8, 4103–4109 (2018).
Kumar, A., Janes, T., Espinosa-Jalapa, N. A. & Milstein, D. Manganese catalyzed hydrogenation of organic carbonates to methanol and alcohols. Angew. Chem. Int. Ed. 57, 12076–12080 (2018).
Wei, D. et al. Hydrogenation of carbonyl derivatives catalysed by manganese complexes bearing bidentate pyridinyl-phosphine ligands. Adv. Synth. Catal. 360, 676–681 (2018).
Fish, R. H., Thormodsen, A. D. & Cremer, G. A. Homogeneous catalytic hydrogenation. 1. Regiospecific reductions of polynuclear aromatic and polynuclear heteroaromatic nitrogen compounds catalyzed by transition metal carbonyl hydrides. J. Am. Chem. Soc. 104, 5234–5237 (1982).
Ryabchuk, P. et al. Heterogeneous nickel-catalysed reversible, acceptorless dehydrogenation of N-heterocycles for hydrogen storage. Chem. Commun. 55, 4969–4972 (2019).
Sorribes, I., Liu, L. C., Domenech-Carbo, A. & Corma, A. Nanolayered cobalt-molybdenum sulfides as highly chemo- and regioselective catalysts for the hydrogenation of quinoline derivatives. ACS Catal. 8, 4545–4557 (2018).
Jardine, I. & McQuillin, F. J. Homogeneous hydrogenation of the -N=N-, -CH=N-, and -NO2 groupings. Chem. Commun. 626 (1970).
Dobereiner, G. E. et al. Iridium-catalyzed hydrogenation of N-heterocyclic compounds under mild conditions by an outer-sphere pathway. J. Am. Chem. Soc. 133, 7547–7562 (2011).
Wen, J. L., Tan, R. C., Liu, S. D., Zhao, Q. Y. & Zhang, X. M. Strong Brønsted acid promoted asymmetric hydrogenation of isoquinolines and quinolines catalyzed by a Rh–thiourea chiral phosphine complex via anion binding. Chem. Sci. 7, 3047–3051 (2016).
Wang, T. L. et al. Highly enantioselective hydrogenation of quinolines using phosphine-free chiral cationic ruthenium catalysts: scope, mechanism, and origin of enantioselectivity. J. Am. Chem. Soc. 133, 9878–9891 (2011).
Cai, X. F., Huang, W. X., Chen, Z. P. & Zhou, Y. G. Palladium-catalyzed asymmetric hydrogenation of 3-phthalimido substituted quinolines. Chem. Commun. 50, 9588–9590 (2014).
Zhu, G., Pang, K. & Parkin, G. New modes for coordination of aromatic heterocyclic nitrogen compounds to molybdenum: catalytic hydrogenation of quinoline, isoquinoline, and quinoxaline by Mo(PMe3)4H4. J. Am. Chem. Soc. 130, 1564–1565 (2008).
Chakraborty, S., Brennessel, W. W. & Jones, W. D. A molecular iron catalyst for the acceptorless dehydrogenation and hydrogenation of N-heterocycles. J. Am. Chem. Soc. 136, 8564–8567 (2014).
Adam, R. et al. A general and highly selective cobalt-catalyzed hydrogenation of N-heteroarenes under mild reaction conditions. Angew. Chem. Int. Ed. 56, 3216–3220 (2017).
Sahoo, B. et al. A robust iron catalyst for the selective hydrogenation of substituted (iso)quinolines. Chem. Sci. 9, 8134–8141 (2018).
Xu, R., Chakraborty, S., Yuan, H. & Jones, W. D. Acceptorless, reversible dehydrogenation and hydrogenation of N-heterocycles with a cobalt pincer catalyst. ACS Catal. 5, 6350–6354 (2015).
Liu, W. P. & Ackermann, L. Manganese-catalyzed C–H activation. ACS Catal. 6, 3743–3752 (2016).
Hammarback, L. A. et al. Mapping out the key carbon–carbon bond-forming steps in Mn-catalysed C–H functionalization. Nat. Catal. 1, 830–840 (2018).
Wang, H., Choi, I., Rogge, T., Kaplaneris, N. & Ackermann, L. Versatile and robust C–C activation by chelation-assisted manganese catalysis. Nat. Catal. 1, 993–1001 (2018).
Sweany, R. L. & Halpern, J. Hydrogenation of .alpha.-methylstyrene by hydridopentacarbonylmanganese (I). Evidence for a free-radical mechanism. J. Am. Chem. Soc. 99, 8335–8337 (1977).
Treichel, P. M. in Comprehensive Organometallic Chemistry II Vol. 6 (eds Abel, E. W., Stone, F. G. A. & Wilkinson, G.) Ch. 1 (Pergamon Press, 1995).
Geier, S. J., Chase, P. A. & Stephan, D. W. Metal-free reductions of N-heterocycles via Lewis acid catalyzed hydrogenation. Chem. Commun. 46, 4884–4886 (2010).
Van Aken, K., Strekowski, L. & Patiny, L. EcoScale, a semi-quantitative tool to select an organic preparation based on economical and ecological parameters. Beilstein J. Org. Chem. https://doi.org/10.1186/1860-5397-2-3 (2006).
Acknowledgements
We thank the analytical department (LIKAT) for their support, and the State of Mecklenburg–Western Pomerania and the Federal State of Germany (BMBF) for financial support. V.P. thanks the Ermenegildo Zegna Founder’s Scholarship for financial support and F. Balzamo for the graphical abstract. We also thank J. Rabeah (LIKAT) and R. Grauke (LIKAT) for the electron paramagnetic resonance spectra reported in the Supporting Information, W. Baumann for the variable temperature NMR spectra measured under in situ hydrogen flow, D. Formenti for the fruitful discussion and D. K. Leonard (LIKAT) for the assistance in manuscript preparation.
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M.B. and V.P. conceived and designed the experiments. V.P. and Y.C. performed the experiments and analysed the data. A.S. performed X-ray crystal structure analyses. K.J. participated in the discussions and supported the project. M.B. and V.P. co-wrote the paper.
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Supplementary information
Supplementary information
Supplementary methods, Tables 1–2, Figures 1–8, references
Compound Mn-2
Crystallographic data for compound Mn-2
Compound Mn-3
Crystallographic data for compound Mn-3
Compound Mn-4
Crystallographic data for compound Mn-4
Compound 2u
Crystallographic data for compound 2u
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Papa, V., Cao, Y., Spannenberg, A. et al. Development of a practical non-noble metal catalyst for hydrogenation of N-heteroarenes. Nat Catal 3, 135–142 (2020). https://doi.org/10.1038/s41929-019-0404-6
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DOI: https://doi.org/10.1038/s41929-019-0404-6
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