Chemical mechanisms are the detailed step-by-step pathways by which chemical reactions occur. Understanding reaction mechanisms is crucial for the prediction of reaction outcomes and for informing the development of more accurate models. Within C-CAS, we strive to elucidate mechanistic information about chemical transformations by combining experimental and computational approaches such as DFT, coupled cluster, ML force fields (ex. AIMNET), linear regression, and transition state calculations.


  • Bartholomew, G.L.; Kraus, S.L.; Karas, L.J.; Carpaneto, F.; Bennett, R.; Sigman, M.S.; Yeung, C.S.; Sarpong, R. “14N to 15N Isotopic Exchange of Nitrogen Heteroaromatics through Skeletal Editing” ChemRxiv 2023 .10.26434/chemrxiv-2023-30dtw

  • Gensch T, dos Passos Gomes G, Friederich P, Peters E, Gaudin T, Pollice R, et al. A Comprehensive Discovery Platform for Organophosphorus Ligands for Catalysis. J. Am. Chem. Soc. 2022, 144 ASAP

  • Luchini, Guilian, and Robert Paton. "Bottom-up Atomistic Descriptions of Top-Down Macroscopic Measurements: Computational Benchmarks for Hammett Electronic Parameters." ChemRxiv (2023) 10.26434/chemrxiv-2023-n8jsm-v2.

  • Matthews, A.D., Peters, E., Debenham, J.S., Gao, Q., Nyamiaka, M.D., Pan, J., Zhang, L.K., Dreher, S.D., Krska, S.W., Sigman, M.S. and Uehling, M.R., 2023. Cu Oxamate-Promoted Cross-Coupling of α-Branched Amines and Complex Aryl Halides: Investigating Ligand Function through Data Science. ACS Catalysis, 13(24), 16195-16206. doi

  • Gensch, T.; Smith, S.R; Colacot, T.J.; Timsina, Y.; Xu, G.; Glasspoole, B.W.; Sigman, M.S, Design and Application of a Screening Set for Monophosphine Ligands in Metal Catalysis. ACS Catal. 2022. 12, 13, 7773-7780.

  • Silva, J. D. J.;  Bartalucci, N.;  Jelier, B.;  Grosslight, S.;  Gensch, T.;  Schünemann, C.;  Müller, B.;  Kamer, P. C.;  Copéret, C.; Sigman, M. S., Development and Molecular Understanding of a Pd-catalyzed Cyanation of Aryl Boronic Acids Enabled by High-Throughput Experimentation and Data Analysis. Helv. Chim. Acta 2021 e2100200.

  • Crawford, J.M.; Gensch, T.; Sigman, M.S.; Elward, J.M.; Steves, J.E.  Impact of Phosphine Featurization Methods in Process Development. Org. Proc. Res. Dev. 2022, 26, 4, 1115-1123

  • Gallegos, L.C.; Luchini, G.; St John, P.C.; Kim, S.; Paton, R.S. Importance of Engineered and Learned Molecular Representations in Predicting Organic Reactivity, Selectivity, and Chemical Properties Acc. Chem. Res. 2021, 54, 4, 827-836.

  • Newman-Stonebraker, Samuel; Smith, Sleight; Borowski, Julia; Peters, Ellyn; Gensch, Tobias; Johnson, Heather; Sigman, Matthew; Doyle, Abigail. Linking Mechanistic Analysis of Catalytic Reactivity Cliffs to Ligand Classification. ChemRxiv, May12, 2021.

  • Saebi, M.;  Nan, B.;  Herr, J.;  Wahlers, J.;  Guo, Z.; Zuranski, A. M.;  Kegej, T.;  Norrby, P.-O.;  Doyle, A. G.;  Wiest, O.; Chawla, N., Wiest, O. On the Use of Real-World Data Sets for Reaction Yield Prediction.  Chem. Sci., 2023, 14, 4997-5005.

  • Jones, K.E.; Park, B.; Doering, N.A.; Baik, M.H.; Sarpong, R.  Rearrangements of the Chrysanthenol Core: Application to a Formal Synthesis of Xishacorene B. J. Am. Chem. Soc. 2021, 143, 20482–20490

  • Zell D; Kingston C; Jermaks J; Smith S.R.; Seeger N; Wassmer J; Sirois, L.E.; Han, C.; Zhang, H.; Sigman, M.S.; Gossling, F., Stereoconvergent and -divergent Synthesis of Tetrasubstituted Alkenes by Nickel-Catalyzed Cross-Couplings. J. Am. Chem. Soc. 2021, 143, 45,19078 -19090.

  • Hardy, M.A.; Nan, B.; Wiest, O.; Sarpong, R.  Strategic elements in computer-aided retrosynthesis: A case study of the pupukeanane natural products Tetrahedron 2022, 103, 132584

  • Newman-Stonebraker, S. H.;  Smith, S. R.;  Borowski, J. E.;  Peters, E.;  Gensch, T.;  Johnson, H. C.;  Sigman, M. S.; Doyle, A. G., Univariate classification of phosphine ligation state and reactivity in cross-coupling catalysis. Science 2021, 374, 301-308

  • Kariofillis S, Jiang S, Żurański A, Gandhi S, Martinez Alvarado J, Doyle A. Using Data Science to Guide Aryl Bromide Substrate Scope Analysis in a Ni/Photoredox-Catalyzed Cross-Coupling with Acetals as Alcohol-Derived Radical Sources. J. Am. Chem. Soc. 2022, 144 ASAP .