Sarah A. Cummings

Senior Lecturer and Organic Chemistry Coordinator
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Contact Information


  • Postdoctoral (2006-2007), University of Utah (Matthew S. Sigman)
  • Ph.D. (2006), Columbia University (Jack R. Norton)
  • B.S. (2001), Haverford College


Dr. Cummings is involved in developing and upgrading the Organic Chemistry Laboratory program, and in the supervision and training of laboratory teaching assistants. In addition to overseeing the laboratory program, she also teaches General Chemistry and Organic Chemistry.


  • Gligorich, K.M.; Iwai, Y.; Cummings, S.A.; Sigman, M.S.  A new approach to carbon-​carbon bond formation:  development of aerobic Pd-​catalyzed reductive coupling reactions of organometallic reagents and styrenes.  Tetrahedron 2009, 65, 5074-5083.
  • Kristian, K.E.; Iimura, M.; Cummings, S.A.; Norton, J.R.; Janak, K.E.; Pang, K.  Mechanism of the Reaction of Alkynes with a "Constrained Geometry" Zirconaaziridine.  PMe3 Dissociates More Rapidly from the Constrained Geometry Complex than from its Cp2 Analogue.  Organometallics 2009, 28, 493-498.
  • Cummings, S.A.; Tunge, J.A.; Norton, J.R.  Direct measurement of the rate of zirconaaziridine enantiomer inversion.  J. Am. Chem. Soc. 2008, 130, 4669-4679.
  • Gligorich, K.M.; Cummings, S.A.; Sigman, M.S.  Catalytic reductive coupling of styrenes and organometallic reagents under aerobic conditions.  J. Am. Chem. Soc. 2007, 129, 14193-14195.
  • Cummings, S.A.; Iimura, M.; Harlan, C.J.; Kwaan, R.J.; vu Trieu, I.; Norton, J.R.; Bridgewater, B.M.; Jakle, F.; Sundararaman, A.; Tilset, M.  An estimate of the reduction potential of B(C6F5)3 from electrochemical measurements on related mesityl boranes.  Organometallics 2006, 1595-1598.
  • Cummings, S.A.; Radford, R.; Erker, G.; Kehr, G.; Fröhlich, R.  Formation of a dynamic η2(O,N)-hydroxylaminato zirconocene complex by nitrosoarene insertion into a Zr-C σ-bond.  Organometallics 2006, 839-842.
  • Cummings, S.A.; Tunge, J.A.; Norton, J.R.  Synthesis and reactivity of zirconaaziridines.  In New Aspects of Zirconium-Containing Organic Compounds; Marek, I., Ed. Topics in Organometallic Chemistry; Springer-Verlag:  Berlin, 2005; Vol. 10, pp 1-39.