Research in our group is primarily directed toward the coordination chemistry of main group element in unusual oxidation states, the design of novel “frustrated Lewis pairs” and applications thereof to homogeneous catalysis and organic synthesis.

Total Synthesis (I), TU Dortmund, WS 2009/2010
Principles in Organometallic Chemistry, TU Dortmund, SS 2010
Stereoselective Synthesis (I), TU Dortmund, WS 2010/2011
Stereoselective Synthesis (II), TU Dortmund, SS 2011
Total Synthesis (I), TU Dortmund, WS 2011/2012
Stereoselective Synthesis, Heinrich-Heine University Düsseldorf, SS 2012 (please find the slides here)
45. "Tuning the Lewis acidity of boranes in frustrated Lewis pair chemistry: implications for the hydrogenation of electron-poor alkenes" M. Alcarazo, Chem.–Eur. J. 2013, 19, DOI: 10.1002/chem.201301158.
44. "Carbon-based frustrated Lewis pairs" S. Khan, M. Alcarazo, Top. Curr. Chem. 2013, 334, 157.
43. "Synthesis, structure and reactivity of cyclopropenyl-1-ylidene stabilized S(II), Se(II) and Te(II) mono- and dications" Á. Kozma, J. Petuškova, C. W. Lehmann, M. Alcarazo, Chem. Commun. 2013, 49, 4145.
42. "Stabilization of a two-coordinate [GeCl]+ cation by simultaneous σ and π donation from a monodentate carbodiphosphorane" S. Khan, G. Gopakumar, W. Thiel, M. Alcarazo, Angew. Chem. Int. Ed. 2013, 52, 5644.
41. "Chiral heterobimetallic complexes of carbodiphosphoranes and phosphinidene–carbene adducts" M. Alcarazo, K. Radkowski, G. Mehler, R. Goddard, A. Fürstner, Chem. Commun. (Cambridge, U. K.) 2013, 49, 3140.
40. "Synthesis and structure of carbene-stabilized N-centered cations [L2N]+, [L2NR]2+, [LNR3]2+ and [L3N]3+" Á. Kozma, G. Gopakumar, W. Thiel, M. Alcarazo, Chem.–Eur. J. 2013, 19, 3542.
39. "Metal-free hydrogenation of electron-poor allenes and alkenes" B. Inés, D. Palomas, S. Holle, S. Steinberg, J. A. Nicasio, M. Alcarazo, Angew. Chem. Int. Ed. 2012, 51, 12367.
38. "Exploiting the π-acceptor properties of carbene-stabilized phosphorus centered trications [L3P]3+: applications in Pt(II) catalysis" J. Carreras, M. Patil, W. Thiel, M. Alcarazo, J. Am. Chem. Soc. 2012, 134, 16753.
37. "At the frontiers of knowledge in chemistry: the 47th Bürgenstock conference" O. García-Mancheño, M. Alcarazo, Angew. Chem. Int. Ed. 2012, 51, 8151.
36. "Synthesis and reactivity of electron poor allenes: formation of completely organic frustrated Lewis pairs" D. Palomas, S. Holle, B. Inés, H. Bruns, R. Goddard, M. Alcarazo, Dalton Trans. 2012, 41, 9073.
35. "Pyracenebis(imidazolylidene): a new Janus-type biscarbene and its coordination to rhodium and iridium" A. Prades, E. Peris, M. Alcarazo, Organometallics 2012, 31, 4623.
34. "Fullerenes as neutral carbon-based Lewis acids" J. Iglesias-Sigüenza, M. Alcarazo, Angew. Chem. Int. Ed. 2012, 51, 1523.
33. "Synthesis, structure, and reactivity of carbene-stabilized phosphorus(III)-centered trications [L3P]3+" J. Petuškova, M. Patil, S. Holle, C. W. Lehmann, W. Thiel, M. Alcarazo, J. Am. Chem. Soc. 2011, 133, 20758.
32. "Catalysis-based and protecting-group-free total syntheses of the marine oxylipins hybridalactone and the ecklonialactones A, B, and C" V. Hickmann, A. Kondoh, B. Gabor, M. Alcarazo, A. Fürstner, J. Am. Chem. Soc. 2011, 133, 13471.
31. "Synthesis, structure, and reactivity of a dihydrido borenium cation" B. Inés, M. Patil, J. Carreras, R. Goddard, W. Thiel, M. Alcarazo, Angew. Chem. Int. Ed. 2011, 50, 8400.
30. "Cyclopropenylylidene-stabilized diaryl and dialkyl phosphenium cations: applications in homogeneous gold catalysis" J. Petuškova, H. Bruns, M. Alcarazo, Angew. Chem. Int. Ed. 2011, 50, 3799.
29. "On the metallic nature of carbon in allenes and heterocumulenes" M. Alcarazo, Dalton Trans. 2011, 40, 1839.
28. "Metal complexes with carbene ligands stabilized by lateral enamines" M. Alcarazo, K. Radkowski, R. Goddard, A. Fürstner, Chem. Commun. 2011, 47, 776.
27. "Heterocyclic S–S bond cleavage by a purely carbogenic frustrated Lewis pair" B. Inés, S. Holle, R. Goddard, M. Alcarazo, Angew. Chem. Int. Ed. 2010, 49, 8389.
26. "A new class of singlet carbene ligands" M. Alcarazo, R. M. Suárez, R. Goddard, A. Fürstner, Chem.–Eur. J. 2010, 16, 9746.
25. "Protecting-group-free and catalysis-based total synthesis of the ecklonialactones" V. Hickmann, M. Alcarazo, A. Fürstner, J. Am. Chem. Soc. 2010, 132, 11042.
24. "Exploring the reactivity of carbon (0)/borane-based frustrated Lewis pairs" M. Alcarazo, C. Gomez, S. Holle, R. Goddard, Angew. Chem. Int. Ed. 2010, 49, 5788 [Erratum: Angew. Chem. Int. Ed. 2010, 49, 5597].
23. "Stereoselective synthesis of cationic heterobidentate C(NHC)/SR rhodium(I) complexes using stereodirecting N,N-dialkylmaino groups" A. Ros, M. Alcarazo, D. Monge, E. Álvarez, R. Fernández, J. M. Lassaletta, Tetrahedron: Asymmetry 2010, 21, 1557.
22. "Synthesis and coordination properties of nitrogen(I)-based ligands" H. Bruns, M. Patil, J. Carreras, A. Vázquez, W. Thiel, R. Goddard, M. Alcarazo, Angew. Chem. Int. Ed. 2010, 49, 3680.
21. "Steering the surprisingly modular π-acceptor properties of N-heterocyclic carbenes: Implications for gold catalysis" M. Alcarazo, T. Stork, A. Anoop, W. Thiel, A. Fürstner, Angew. Chem. Int. Ed. 2010, 49, 2542.
20. "Synthesis, structure and properties of [1,2,4]triazolo[4,3-a]pyridin-3-ylidene rhodium and palladium complexes" J. Iglesias-Sigüenza, A. Ros, E. Díez, M. Alcarazo, E. Álvarez, R. Fernández, J. M. Lassaletta, Dalton Trans. 2009, 7113.
19. "Tetrakis(dimethylamino)allene" A. Fürstner, M. Alcarazo, H. Krause, Org. Synth. 2009, 86, 298.
18. "Coordination Chemistry at Carbon" M. Alcarazo, C. W. Lehmann, A. Anoop, W. Thiel, A. Fürstner, Nat. Chem. 2009, 1, 295.
17. "Stereoselective synthesis of Rh(I) 4-(dialkylamino)triazol-5-yledene complexes" A. Ros, M. Alcarazo, J. Iglesias-Sigüenza, E. Díez, E. Álvarez, R. Fernández, J. M. Lassaletta, Organometallics 2008, 27, 4555.
16. "Carbenes stabilized by ylides: pushing the limits" A. Fürstner, M. Alcarazo, K. Radkowski , W. Lehmann, Angew. Chem. Int. Ed. 2008, 47, 8302.
15. "Coordination chemistry of ene-1,1-diamines and a prototype "carbodicarbene"" A. Fürstner, M. Alcarazo, R. Goddard, C. W. Lehmann, Angew. Chem. Int. Ed. 2008, 47, 3210.
14. "Preparation of a non-symmetrical imidazolium salt: 1-adamantyl-3-mesityl-4,5-dimethylimidazaloium tetrafluoroborate" A. Fürstner, M. Alcarazo, V. César, H. Krause, Org. Synth. 2008, 85, 34.
13. "Effective modulation of the donor properties of N-heterocyclic carbene ligands by "through-space" communication within a planar chiral scaffold" A. Fürstner, M. Alcarazo, H. Krause, C. W. Lehmann, J. Am. Chem. Soc. 2007, 129, 12676.
12. "Enantioselective conjugate addition of N,N-dialkylhydrazones to α-hydroxy enones" D. Monge, E. Martín-Zamora, J. Vázquez, M. Alcarazo, E. Álvarez, R. Fernández, J. M. Lassaletta, Org. Lett. 2007, 9, 2867.
11. "Imidazo[1,5-a]pyridin-3-ylidene/thioether mixed C/S ligands and complexes thereof" S. J. Roseblade, A. Ros, D. Monge, M. Alcarazo, E. Álvarez, J. M. Lassaletta, R. Fernández, Organometallics 2007, 26, 2570.
10. "Isoquinolin-1-ylidenes as electronically tuneable ligands" S. Gómez-Bujedo, M. Alcarazo, C. Pichon, E. Álvarez, R. Fernández, J. M. Lassaletta, Chem. Commun. 2007, 1180.
9. "Synthesis, structure and applications of N-dialkylamino-N’-alkylimidazol-2-ylidenes as a new type of NHC ligands" A. Ros, D. Monge, M. Alcarazo, E. Álvarez, J. M. Lassaletta, R. Fernández, Organometallics 2006, 25, 6039.
8. "Convenient, scalable and flexible method for the preparation of imidazolium salts with previously inaccessible substitution patterns" A. Fürstner, M. Alcarazo, V. César, C. W. Lehmann, Chem. Commun. 2006, 2176.
7. "Synthesis, structure and electronic properties of N-dialkylamino and N-alkoxy-1,2,4-triazol-3-ylidene ligands" M. Alcarazo, R. Fernández, E. Álvarez, J. M. Lassaletta, J. Organomet. Chem. 2005, 690, 5979.
6. "Magnesium bis(monoperoxyphathalate) hexahydrate (MMPP)" M. Alcarazo Velasco, Synlett 2005, 1807.
5. "Imidazo[1,5-a]pyridine: A versatile architecture for N-Heterocyclic carbenes" M. Alcarazo, S. J. Roseblade, A. R. Cowley, R. Fernández, J. M. Brown, J. M. Lassaletta, J. Am. Chem. Soc. 2005, 127, 3290.
4. "1,3-Bis(N,N-dialkylamino)imidazolin-2-ylidenes: synthesis and reactivity of a new family of stable N-heterocyclic carbenes" M. Alcarazo, S. J. Roseblade, E. Alonso, R. Fernández, E. Alvarez, F. J. Lahoz, J. M. Lassaletta, J. Am. Chem. Soc. 2004, 126, 13242.
3. "Glyoxal bis-hydrazones: a new family of nitrogen ligands for asymmetric catalysis" J. M. Lassaletta, M. Alcarazo, R. Fernández, Chem. Commun. 2004, 298.
2. "Synthesis and spectroelectrochemical studies of mixed heteroleptic chelate complexes of ruthenium (II) with 1,8-bis(2-pyridyl)-3,6-dithiaoctane (pdto) and substituted 1,10-phenanthrolines" L. A. Ortiz-Frade, L. Ruiz-Ramírez, I. González, A. Marín-Becerra, M. Alcarazo, J. G. Alvarado-Rodriguez, R. Moreno-Esparza, Inorg. Chem. 2003, 42, 1825.
1. "Synthesis of α-hydroxyhydrazones from aldehydes" R. Fernández, E. Martín-Zamora, C. Pareja, M. Alcarazo, J. Martín, J. M. Lassaletta, Synlett 2001, 1158.
Organometallic Chemistry (I), TU Dortmund, SS 2013 (Please find the slides here: part I und part II)
Stereoselective Synthesis, Heinrich-Heine University Düsseldorf, SS 2012 (please find the slides here)
Total Synthesis (I), TU Dortmund, WS 2011/2012
Stereoselective Synthesis (I), TU Dortmund, WS 2010/2011
Principles in Organometallic Chemistry, TU Dortmund, SS 2010
Stereoselective Synthesis (II), TU Dortmund, SS 2011Total Synthesis (I), TU Dortmund, WS 2009/2010
It is well established that the reactivity of a metal can be dramatically modulated by the appropriate ligand selection. Typical ligands used in organometallic chemistry and catalysis are phosphines, CO, isonitriles, imines… More recently N-heterocyclic carbenes, a family of compounds based on low valent C(II), have gained a prominent role in the area due to their powerful electron donor ability. This property has led to a tremendous rate enhancement for some catalytic processes, in particular cross-coupling reactions or olefin metathesis. Surprisingly, the use of ligands based on other main group elements in low oxidation state, such as N(I), P(I), Si(II) and Ge(II), is still scarce even though they may be more electron releasing than carbenes. It is the objective of this project to synthesize some of these compounds and to study their coordination chemistry and possible applications in catalysis.
The combination of sterically demanding Lewis acids and bases does not produce the classical neutralization reaction to form Lewis adducts. Instead the unquenched acidity and basicity that coexist in the same media are able to promote unexpected reactions such as the heterolytic cleavage of dihydrogen or the activation of carbon dioxide. However, most of the known “frustrated Lewis pairs” (FLP) rely on P-, C- or N-based Lewis bases combined with a polyfluorinated borane. As an alternative to B(C6F5)3 we have employed electron poor allenes. In these compounds the intrinsic charge separation resulting from the tendency of the substituents to accept electronic density generates a partial carbocationic character on the allene central carbon, rendering this center a potential borane surrogate.
Dr. Abdellah, Ibrahim
+49(0)208/306-2473
abdellah((atsign))kofo.mpg.de
Dr. Alcarazo, Manuel
+49(0)208/306-2428
alcarazo((atsign))kofo.mpg.de
Dr. Carreras, Javier
Jan 11 – Feb 13 Post-doc
Costa, Paolo
Dec 11 – Apr 12 PhD Student
Deden, Tobias
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Gimeno Cardells, Ana Maria
Jun 12 – Sep 12 Visiting PhD Student
Gonzalez Fernández, Elisa
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Gu, Lianghu
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Dr. Gualco, Pauline
May 12 – Apr 13 Post-doc
Holle, Sigrid
+49(0)208/306-2474
sigrid.holle((atsign))kofo.mpg.de
Dr. Iglesias Sigüenza, Francisco Javier
Jul 11 – Jun 12 Post-doc
Dr. Ines Tejedor, Blanca
Jan 10 – Dec 11 Post-doc; Jan 12 – Dec 12 Scientific Co-worker
Dr. Khan, Shabana
Oct 11 – Dec 12 Scientific Co-worker
Klein, Betina
Sep 09 – Jan 13 Trainee
Kozma, Ágnes
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kozma((atsign))kofo.mpg.de
Linowski, Pawel
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Dr. Martín Gálvez, Francisca María
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Mehler, Gerlinde
+49(0)208/306-2429
mehlerg((atsign))kofo.mpg.de
Nicasio Collazo, Juan Antonio
May 12 – Apr 13 Visiting PhD Student
Dr. Palomas Dona, David
Mar 10 – Feb 12 Post-doc
Petuškova, Jekaterina
Apr 09 – Mar 12 PhD Student
Prades Ferrer, Amparo
Sep 11 – Nov 11 Visiting PhD Student
Dr. Ramachandran, Azhakar
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Schauenburg, Dominik
Jan 13 – Mar 13 BSc Student
Steinberg, Sebastian
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steinberg((atsign))kofo.mpg.de
Tinnermann, Hendrik
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Truckenbrodt, Jens
Jul 11 – Jan 12 Permanent Staff
Wille, Christian
+49(0)208/306-2473
wille((atsign))kofo.mpg.de
Dr. Zanardi, Alessandro
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zanardi((atsign))kofo.mpg.de