Abstract
This paper presents an ecological protocol for Knoevenagel condensation using a catalytic amount of 4,4′-trimethylenedipiperidine as a versatile, efficient, safe, commercially available, inexpensive, and recyclable organocatalyst by a ball-milling process at room temperature. The scope of the present protocol was explored and demonstrated for Knoevenagel condensation of the active methylene, such as Meldrum’s acid with various aryl and heteroaryl aldehydes. The developed protocol provides a good to excellent conversion of various aldehydes to respective Knoevenagel products in an environmentally friendly process. Furthermore, this efficient process displays a combination of the synthetic virtues of conventional Knoevenagel condensation with ecological benefits and the convenience of a facile mechanochemistry procedure.
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References
J.L. Do, T. Frisčič, ACS Cent. Sci. 3, 13 (2017)
M.A.P. Martins, C.P. Frizzo, D.N. Moreira, L. Buriol, P. Machado, Chem. Rev. 109, 4140 (2009)
L.R. Madivada, R.R. Anumala, G. Gilla, S. Alla, K. Charagondla, M. Kagga, A. Bhattacharya, R. Bandichhor, Org. Process Res. Dev. 13, 1190 (2009)
M.S. Hoekstra, D.M. Sobieray, M.A. Schwindt, T.A. Mulhern, T.M. Grote, B.K. Huckabee, V.S. Hendrickson, L.C. Franklin, E.J. Granger, G.L. Karrick, Org. Process Res. Dev. 1, 26 (1997)
D.B. Ramachary, C. Venkaiah, Y.V. Reddy, M. Kishor, Org. Biomol. Chem. 7, 2053 (2009)
L.G. Voskressensky, A.A. Festa, A.V. Varlamov, Tetrahedron 70, 551 (2014)
L.F. Tietze, U. Beifuss, in Comprehensive Organic Synthesis, vol. 2, ed. by B.M. Trost, I. Flemming, C.H. Heatcock (Pergamon Press, Oxford, 1991), p. 341
A.A. Zemtsov, V.V. Levin, A.D. Dilman, M.I. Struchkova, P.A. Belyakov, V.A. Tartakovsky, Tetrahedron Lett. 50, 2998 (2009)
B. Pia, E. Sotelo, M. Suarez, E. Ravina, E. Ochoa, Y. Verdecia, H. Novoa, N. Blaton, C. de Ranter, O.M. PeeterS, Tetrahedron 56, 2473 (2000)
K. Liu, W. Rao, H. Parikh, Q. Li, T.L. Guo, S. Grant, G.E. Kellogg, S. Zhang, Eur. J. Med. Chem. 47, 125 (2012)
E.E. Shults, E.A. Semenova, A.A. Johnson, S.P. Bondarenko, I.Y. Bagryanskaya, Y.V. Gatilov, G.A. Tolstikov, Y. Pommier, Bioorg. Med. Chem. Lett. 17, 1362 (2007)
H.S. Sandhu, S. Sapra, M. Gupta, K. Nepali, R. Gautam, S. Yadav, R. Kumar, S.M. Jachak, M. Chugh, M.K. Gupta, O.P. Suri, K.L. Dhar, Bioorg. Med. Chem. 18, 5626 (2010)
H. Mudhar, A. Witty, Tetrahedron Lett. 51, 4972 (2010)
R.C. Larock, Comprehensive organic transformations, 2nd edn. (Wiley, Toronto, 1999)
F. Santamarta, P. Verdìa, E. Tojo, Catal. Commun. 9, 1779 (2008)
Z. Du, T. Kawatani, K. Kataoka, R. Omatsu, J. Nokami, Tetrahedron 68, 2471 (2012)
N.G. Khaligh, S.B.A. Hamid, S.J.J. Titinchi, Polycycl Aromat Compd 37, 31 (2017)
N.G. Khaligh, S.J.J. Titinchi, S.B.A. Hamid, H.S. Abbo, Polycycl Aromat Compd 36, 716 (2016)
N.G. Khaligh, S.B.A. Hamid, S.J.J. Titinchi, Chin. Chem. Lett. 27, 104 (2016)
N.G. Khaligh, H.S. Abbo, S.J.J. Titinchi, Res. Chem. Intermed. 43, 901 (2017)
N.G. Khaligh, O.C. Ling, T. Mihankhah, M.R. Johan, J.J. Ching, Aust. J. Chem. (2018)
J.M. Khurana, K. Vij, Tetrahedron Lett. 52, 3666 (2011)
S. Ghosh, J. Das, S. Chattopadhyay, Tetrahedron Lett. 52, 2869 (2011)
A.R. Mohite, R.G. Bhat, Org. Lett. 15, 4564 (2013)
T.S. Jin, R.Q. Zhao, M. Li, Y. Zhao, T.S. Li, Arkivok 14, 53 (2006)
E.V. Dalessandro, H.P. Collin, L.G.L. Guimaraes, M.S. Valle, J.R. Pliego Jr., J. Phys. Chem. B 121, 5300 (2017)
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The authors are grateful to staff members at the Analytical and Testing Center of Research House of Professor Reza, and express thanks to the University of Malaya for partial support of this work.
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Khaligh, N.G., Mihankhah, T. & Johan, M.R. An alternative, practical, and ecological protocol for synthesis of arylidene analogues of Meldrum’s acid as useful intermediates. Res Chem Intermed 45, 3291–3300 (2019). https://doi.org/10.1007/s11164-019-03796-2
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DOI: https://doi.org/10.1007/s11164-019-03796-2