Dirhodium tetracarboxylates (and related structures) are known to promote a variety of reactions, including CH-insertions and cyclopropanations. This playground has proved valuable for testing various mechanistic concepts ranging from non-statistical dynamic effects to preferential metal dissocation before catalytic cycle closure.
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Nair, V. N.; Kojasoy, V.; Laconsay, C. J.; Kong, W.;Tantillo, D. J.; Tambar, U. K. J. Am. Chem. Soc. 2021,143, 9016-9025: "Catalyst-Controlled Regiodivergence in Rearrangements of Indole-Based Onium Ylides"
Laconsay, C. J.; Tantillo, D. J. Synthesis 2021, 53, 363-3652: "Melding of Experiment and Theory Illuminates Mechanisms of Metal-Catalyzed Rearrangements: Computational Approaches and Caveats"
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Guo, W.; Hare, S. R.; Chen. S.-S.; Saunders, C.; Tantillo, D. J. J. Am. Chem. Soc. 2022, 144, 17219-17231: "C-H Insertion in Dirhodium Tetracarboxylate-Catalyzed Reactions Despite Dynamical Tendencies Toward Fragmentation – Implications for Reaction Efficiency and Catalyst Design"
Gao, M.; Ruiz, J. M.; Jimenez, E.; Lo, A.; Laconsay, C. J.; Fettinger, J. C.; Tantillo, D. J.; Shaw, J. T. Chem. Sci. 2023, 14, 6443-6448: "Catalytic Generation of ortho-Quinone Dimethides via Donor/Donor Rhodium Carbenes"
Laconsay, C. J.; Tantillo, D. J. J. Org. Chem. 2023, 88, 9056-9065: "Modulating Escape Channels of Cycloheptatrienyl Rhodium Carbenes to Form Semibullvalene"
