Robert E. Maleczka
Synthetic Organic Chemistry
Primary Research Area
Other Area(s) of Interest
(Research Description PDF)
Our group is interested in a) the total synthesis of biologically important natural products, b) the invention of new reactions and strategies in organic synthesis, and c) green chemistry.
Green Chemistry: Central to our research is the development of efficient and environmentally benign reactions and strategies. The Pharmaceutical Roundtable of the American Chemical Society’s Green Chemistry Institute deemed cross-couplings that avoid haloaromatics as their top aspirational reaction. In collaboration with Professor Mitch Smith, we are inventing such reactions. Specifically, we are using catalytic C–H activation/borylation, often combined with subsequent chemical events, to generate pharmaceutically relevant building blocks for organic synthesis and the late stage functionalization of drugs and drug candidates.
Another of our green chemistry ventures aims to minimizing the need for tin in various processes. For example, we have developed an allylation/hydrostannation sequence where the tin waste from the allylation is recycled in situ so as to allow its use in the hydrostannation. This chemistry employs polymethylhydrosiloxane (PMHS), which is an oligomeric non-toxic waste product of the silicon industry, as the stoichiometric reductant.
Invention of New Reactions: The principles of green chemistry also motivate us to create new synthetic methods. Here we have been focusing on the employment of organosilanes as both reagents and substrates in chemical transformations ranging from Wittig rearrangements to new approaches to double-decker silsesquioxanes (DDSQ’s) for polymer applications. As part of a collaboration with Dow Chemical, we have also used PMHS in conjunction with our borylation chemistry to regioselectively generate building blocks of interest to the agrochemical industry. Here the combination of Pd(OAc)2 and PMHS generates siloxane encapsulated Pd(0) nanoclusters.
Total Synthesis: The unifying thesis behind all of our methodological and mechanistic studies is that the chemistry to emerge from such studies should be applicable to real synthetic problems. We view target synthesis as the best proof of this concept. For example, as part of our green chemistry program, we look to make TMC-95A and autolytimycin by the strategic application of our own synthetic methods.
Bismuth Acetate as a Catalyst for the Sequential Protodeboronation of Di- and Triborylated Indoles, Shen, F.; Tyagarajan, S.; Perera, D.; Krska, S. W.; Maligres, P. E.; Smith, M. R., III; Maleczka, R. E.; Jr., Org. Lett. 2016, 18, 1554–1557.
Improved Synthesis of Electron Deficient Bipyridines, Li, H.; Oppenheimer, J.; Smith, M. R., III; Maleczka, R. E.; Jr., Tetrahedron Lett. 2016, 57, 2231–2232.
Harnessing C–H Borylation/Deborylation for Selective Deuteration, Synthesis of Boronate Esters, and Late Stage Functionalization, Kallepalli, V. A.; Gore, K. A.; Shi, F.; Sanchez, L.; Chotana, G. A.; Miller, S. L.; Maleczka, R. E., Jr.; Smith, M. R., III, J. Org. Chem. 2015, 80, 8341–8353.
Reversible Borylene Formation from Ring-Opening of Pinacolborane and Other Intermediates Generated From 5-Coordinate Trisboryl Complexes: Implications for Catalytic C–H Borylation, Ghaffari, B.; Vanchura, B. A., II; Chotana, G. A.; Staples, R. J.; Holmes, D.; Maleczka, R. E., Jr.; Smith, M. R., III, Organometallics 2015, 34, 4732–4740.
Stereoconvergent [1,2]- and [1,4]-Wittig Rearrangements of 2-Silyl-6-aryl-5,6-dihydropyrans: A Tale of Steric vs. Electronic Regiocontrol of Divergent Pathways, Mori-Quiroz, L. M.; Maleczka, R. E., Jr., J. Org. Chem. 2015, 80, 1163–1191.
A Catalytic Borylation / Dehalogenation Route to ortho-Fluoro Arylboronates Jayasundara, C. R. K.; Unold, J. M.; Oppenheimer, J.; Smith, M. R., III; Maleczka, R. E., Jr., Org. Lett. 2014, 16, 6072–6075.
Silyl Phosphorus and Nitrogen Donor Chelates for Homogeneous Ortho Borylation Catalysis, Ghaffari, B.; Preshlock, S. M.; Plattner, D. L.; Staples, R. J.; Maligres, P. E.; Krska, S. W.; Maleczka, R. E.; Jr.; Smith, M. R., III, J. Am. Chem. Soc. 2014, 136, 14345–14348.
A One-Pot Allylation-Hydrostannation Sequence with Recycling of the Intermediate Tin Waste, Ghosh, B.; Amado-Sierra, M. R. I.; Holmes, D.; Maleczka, R. E., Jr., Org. Lett. 2014, 16, 2318–2321.
B.S., 1984, Univ. of Illinois at Urbana-Champaign
Abbott Labs, 1984-1987
Ph.D., 1992, The Ohio State Univ.
Postdoctoral Fellow, 1992-1995, American Cancer Society Univ. of Pennsylvania
|12/08/2016||MSU Chemistry Professors Elected to Leadership Offices|
|12/14/2015||Professor Robert Maleczka to serve as councilor|
|11/05/2015||Dr. Luis Sanchez appointed President-Elect|
|06/22/2015||Aaron Baker selected as FAST Fellow|
|06/19/2015||Damith Perera selected to present his work|
|06/19/2015||Dr. Lamont Terrell selected by council|
|07/28/2014||Professor Rob Maleczka named a Fellow|
|06/30/2014||Damith Perera receives award|
|06/10/2014||Damith Perera wins award|
|05/05/2014||Jason Unold receives award|
|05/23/2013||Professors Mitch Smith and Rob Maleczka receive awards|
|03/11/2013||Professor Robert Maleczka receives award|
|09/04/2012||Professor Robert Maleczka gives talk|
|04/16/2012||Amy Pochodylo receives award|
|03/12/2012||Dr. Bobby L. Wilson receives award|
|10/28/2011||Damith Perera's poster earns honors|
|10/28/2011||Professor Robert Maleczka elected as a Member-at-Large|
|06/10/2008||Chemistry professors receive awards|
|07/13/2007||Chemistry professors receive Grant|
|09/08/2006||Chemistry professors receive award|
|2013||Meritorious Faculty Award by the College of Natural Science Alumni Association|
|2013||Merck Technology Symposium's Technology Collaboration Award|
|2008||Presidential Green Chemistry Challenge Award|
|2003 - 2004||Smith First Edition Board of Advisors||McGraw Hill|
|2001||Teacher-Scholar Award||Michigan State University (College of Natural Science)|
|2001 - 2004||Yamanouchi USA Foundation Faculty Award||Yamanouchi USA Foundation|
|2000||Junior Faculty Award||Sigma Xi Honor Society (Michigan State University)|
|2000||Novartis Lecturer||Yale University|
|2000 - 2003||NSF Career Award||National Science Foundation|
|1998||Advisory Board Member||National Organization for the Professional Advancement of Black Chemists and Chemical Engineers|
|1998||MSU Senior Class Council Outstanding Faculty Award Nominee||Michigan State University (Senior Class Council)|
|1998 - 2001||NIH First Award||National Institutes of Health|
|1998||MSU Chapter Mentor of the Year||National Organization for the Professional Advancement of Black Chemists and Chemical Engineers|
|1993 - 1995||Postdoctoral Fellow||American Cancer Society|
|1992||Ph.D.||The Ohio State University|
|1987 - 1992||Graduate Research Associate||The Ohio State University|
|1984 - 1987||Research Assistantship||Abbott Laboratories|
|1984||Bachelor of Science||University of Illinois, Urbana-Champaign|
|1983 - 1984||Undergraduate Research||University of Illinois, Urbana-Champaign|
|1980 - 1982||Air Force ROTC Scholarship||Air Force ROTC|
|Dean's List||University of Illinois, Urbana-Champaign|