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Net-1,2-Hydrogen Atom Transfer of Amidyl Radicals: Toward the Synthesis of 1,2-Diamine Derivatives

https://doi.org/10.1021/jacs.3c04376

Jiang, Yonggang; Liu, Dongxiang; Rotella, Madeline E; Deng, Guogang; Liu, Zhengfen; Chen, Wen; Zhang, Hongbin; Kozlowski, Marisa C; Walsh, Patrick J; Yang, Xiaodong (July 2023, Journal of the American Chemical Society)

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Fe-Catalyzed dicarbofunctionalization of electron-rich alkenes with Grignard reagents and (fluoro)alkyl halides

https://doi.org/10.1039/D1CC04619E

Rotella, Madeline E.; Sar, Dinabandhu; Liu, Lei; Gutierrez, Osvaldo (November 2021, Chemical Communications)

An iron-catalyzed regioselective dicarbofunctionalization of electron-rich alkenes is described. In particular, aryl- and alkyl vinyl ethers are used as effective linchpins to couple alkyl or (fluoro)alkyl halides and sp 2 -hybridized Grignard nucleophiles. Preliminary results demonstrate the ability to engage thioethers as linchpins and control enantioselectivity in these transformations, an area which is largely unexplored in iron-catalyzed three-component cross-coupling reactions.
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1,2-Hydrogen atom transfer of aminyl radicals under photoredox catalysis for the synthesis of α-amino phosphine oxides

https://doi.org/10.1039/D5SC00268K

Pan, Ailin; Rotella, Madeline E; Meng, Yamiao; Tian, Xun; Duan, Shengzu; Jiang, Yonggang; Deng, Guogang; Limburg, Bart; Zhang, Hongbin; Kozlowski, Marisa C; et al (January 2026, Chemical Science)

Photocatalytic 1,2-HAT of N-centered radicals leads to C-centered α-amino radicals, with trapping by phosphine oxides to access α-amino phosphine oxides. Mechanistic experiments and DFT calculations support a 1,2-HAT pathway.
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Free, publicly-accessible full text available January 1, 2027
Mechanism of Iminium Salt-Catalyzed C(sp ³ )–H Amination: Factors Controlling Hydride Transfer versus H-Atom Abstraction

https://doi.org/10.1021/acscatal.9b03588

Rotella, Madeline E.; Dyer, Robert M.; Hilinski, Michael K.; Gutierrez, Osvaldo (November 2019, ACS Catalysis)

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Siloxide Podand Ligand as a Scaffold for Molybdenum-Catalyzed Alkyne Metathesis and Isolation of a Dynamic Metallatetrahedrane Intermediate

https://doi.org/10.1021/acs.organomet.9b00430

Thompson, Richard R.; Rotella, Madeline E.; Du, Pu; Zhou, Xin; Fronczek, Frank R.; Kumar, Revati; Gutierrez, Osvaldo; Lee, Semin (October 2019, Organometallics)

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Oxa- and Azabenzonorbornadienes as Electrophilic Partners under Photoredox/Nickel Dual Catalysis

https://doi.org/10.1021/acscatal.9b02458

Luo, Youran; Gutiérrez-Bonet, Álvaro; Matsui, Jennifer K.; Rotella, Madeline E.; Dykstra, Ryan; Gutierrez, Osvaldo; Molander, Gary A. (August 2019, ACS Catalysis)

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Impact of Ligands and Metals on the Formation of Metallacyclic Intermediates and a Nontraditional Mechanism for Group VI Alkyne Metathesis Catalysts

https://doi.org/10.1021/jacs.1c01843

Thompson, Richard R.; Rotella, Madeline E.; Zhou, Xin; Fronczek, Frank R.; Gutierrez, Osvaldo; Lee, Semin (June 2021, Journal of the American Chemical Society)

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