Abstract
The enantioselective heterogeneous catalytic hydrogenation of trifluoromethylcyclohexyl ketone (2), on Pt-alumina (E4759) modified by different chiral compounds in toluene and ethanol solution with and without trifluoroacetic (TFA) has been investigated. The effects of the type of modifiers and their concentration (0–10 mmol/l), hydrogen pressure (1–100 bar), temperature (273–301 K) and conversion on the reaction rate and the enantioselectivity (ee) were studied. The achieved ee was 48% in the case of CD. Depending on solvents the inversion of enantioselectivity was observed. The available information suggests that the compounds responsible for chiral induction are different intermediates, the structure of which depends mostly on the acidic or non-acidic nature of the hydrogenation medium.
Similar content being viewed by others
References
I. Ojima, J.R. McCarthy and J.R. Welch, Biomedical Frontiers of Fluorine Chemistry (ACS Books, Washington, 1996).
M.W. Walter, A. Felici, M. Galleni, R.P. Soto, R.M. Adlington, J.E. Baldwin, J.M. Freŕe, M. Gololobov and C.J. Schofield, Bioorg. Med. Chem. Letters 6 (1996) 2455.
V.A. Soloshonok, Enantiocontrolled Synthesis of Fluoro-Organic Compounds (Wiley, Chichester, 1999).
W.H. Pirkle and M.S. Hoekstra, J. Org. Chem. 39 (1974) 3904.
P.V. Ramachandran, A.V. Teodorevic and H.C. Brown, Tetrahedron 49 (1993) 1725.
M. Bucciarelli, A. Forni, I. Moretti and G. Torre, Synthesis 11 (1983) 897.
R. Noyori and R. Ohkuma, Angew. Chem. Int. Ed. 40 (2001) 40.
P. Gamez, F. Fache and M. Lemaire, Tetrahedron: Asymmetry 6 (1995) 705.
M. Studer, H.-U. Blaser and Ch. Exner, Adv. Synth. Catal. 345 (2003) 45.
T. Mallat, M. Bodmer and A. Baiker, Catal. Lett. 44 (1997) 95.
K. Balaźsik, B. Török, K. Felföldi and M. Bartók, Ultrason. Sonochem. 5 (1999) 149.
M. Bodmer, T. Mallat and A. Baiker, Chem. Ind. 75 (1998) 75.
M. von Arx, T. Mallat and A. Baiker, J. Catal. 193 (2000) 161.
M. von Arx, T. Mallat and A. Baiker, Tetrahedron: Asymmetry 12 (2001) 3089.
M. von Arx, T. Bürgi, T. Mallat and A. Baiker, Chem. Eur. J. (2002) 1430.
M. von Arx, T. Mallat and A. Baiker, Catal. Lett. 78 (2002) 267.
A. Vargas, T. Bürgi and A. Baiker, New J. Chem. 26 (2002) 807.
B. Török and G.K. Prakash, Adv. Synth. Catal. 345 (2003) 165.
R. Hess, F. Krumeich, T. Mallat and A. Baiker, Catal. Lett. 92 (2004) 141.
R. Hess, S. Diezi, T. Mallat and A. Baiker, Tetrahedron: Asymmetry 15 (2004) 251.
T. Varga, K. Felföldi, P. Forgoánd M. Bartók, J. Mol. Catal. A-Chem. 216 (2004)181.
B.Török, K. Felföldi, G. Szakonyi, K. Balázsik and M. Bartók, Catal. Lett. 52 (1998) 81.
X. Zuo, H. Liu, D. Guo and X. Yang, Tetrahedron 55 (1999) 7787.
F.E. Herkes and D.J. Burton, J. Org. Chem. 32 (1967) 1311.
M. Bartók, Gy. Szöllösi, K. Balázsik and T. Bartók, J. Mol. Catal. A-Chem. 177 (2002) 299.
M. Bartók, K. Balázsik, Gy. Szöllösi and T. Bartók, J. Catal. 205 (2002) 168.
M. Bucciarelli, A. Forni, I. Moretti and G. Torre, J. Chem. Soc., Chem. Commun. (1978) 457.
M.L.M. Schilling, H.D. Roth and W.C. Herndon, J. Am. Chem. Soc. 102 (1980) 4271.
B. Török, K. Balázsik, K. Felföldi and M. Bartók, Stud. Surf. Sci. Catal. 130 (2000) 3381.
M. Bartók, K. Balázsik, T. Bartók and Z. Kele, Catal. Lett. 87 (2003) 235.
M. Garland, and H-U. Blaser, J. Am. Chem. Soc. 112 (1990) 7048.
J.U. Köhler and J.S. Bradley, Catal. Lett. 45 (1997) 203.
M. Sutyinszki, K. Szöri, K. Felföldi and M. Bartók, Catal. Commun. 3 (2002) 125.
von M. Arx, N. Dummer, D.J. Willock, S.H. Taylor, R.P.K. Wells, P.B. Wells and G.J. Hutchings, Chem. Commun. (2003) 1926.
E. Toukoniitty, B. Sevciková, P. Maki-Arvela, J. Warna, T. Salmi and D.Yu. Murzin, J. Catal. 213 (2003) 7.
M. Bartók, M. Sutyinszki, K. Felföldi and Gy. Szöllösi, Chem. Commun. (2002) 1130.
S. Diezi, A. Szabó, T. Mallat and A. Baiker, Tetrahedron: Asymmetry 14 (2003) 2573.
G. Vayner, K.N. Houk and Y.K. Sun, J. Am. Chem. Soc. 126 (2004) 199.
A. Gamez, J. Köhler and J. Bradley, Catal. Lett. 55 (1998) 73.
X. Li, R.P.K. Wells, P.B. Wells, G.J. Hutchings, J. Catal. 221 (2004) 653.
K. Szöri, M. Sutyinszki, K. Felföldi and M. Bartók, Appl. Catal. A-Gen. 237 (2002) 275.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Felföldi, K., Varga, T., Forgó, P. et al. Enantioselective Hydrogenation of Trifluoromethylcyclohexyl Ketone on Cinchona Alkaloid Modified Pt-Alumina Catalyst. Catalysis Letters 97, 65–70 (2004). https://doi.org/10.1023/B:CATL.0000034289.64347.c1
Issue Date:
DOI: https://doi.org/10.1023/B:CATL.0000034289.64347.c1