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1. Principal 2-blocks and Sylow 2-subgroups: PRINCIPAL 2-BLOCKS AND SYLOW 2-SUBGROUPS

   https://doi.org/10.1112/blms.12181  

   Schaeffer Fry, A. A.; Taylor, Jay (August 2018, Bulletin of the London Mathematical Society)
2. COH, SRT 2 2 , and multiple functionals

   https://doi.org/10.3233/COM-190261  

   Dzhafarov, Damir D.; Patey, Ludovic (April 2021, Computability)

   null (Ed.)

   We prove the following result: there is a family R = ⟨ R 0 , R 1 , … ⟩ of subsets of ω such that for every stable coloring c : [ ω ] 2 → k hyperarithmetical in R and every finite collection of Turing functionals, there is an infinite homogeneous set H for c such that none of the finitely many functionals map R ⊕ H to an infinite cohesive set for R. This provides a partial answer to a question in computable combinatorics, whether COH is omnisciently computably reducible to SRT 2 2 . 

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3. Photosensitized [2+2]‐Cycloadditions of Alkenylboronates and Alkenes

   https://doi.org/10.1002/ange.202200725  

   Liu, Yanyao; Ni, Dongshun; Stevenson, Bernard_G; Tripathy, Vikrant; Braley, Sarah_E; Raghavachari, Krishnan; Swierk, John_R; Brown, M_Kevin (April 2022, Angewandte Chemie)

   Abstract A new strategy for the synthesis of highly versatile cyclobutylboronates via the photosensitized [2+2]‐cycloaddition of alkenylboronates and alkenes is presented. The process is mechanistically different from other processes in that energy transfer occurs with the alkenylboronate as opposed to the other alkene. This strategy allows for the synthesis of an array of diverse cyclobutylboronates. The conversion of these adducts to other compounds as well as their utility in the synthesis of melicodenine C is demonstrated. 

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4. Photosensitized [2+2]‐Cycloadditions of Alkenylboronates and Alkenes

   https://doi.org/10.1002/anie.202200725  

   Liu, Yanyao; Ni, Dongshun; Stevenson, Bernard_G; Tripathy, Vikrant; Braley, Sarah_E; Raghavachari, Krishnan; Swierk, John_R; Brown, M_Kevin (April 2022, Angewandte Chemie International Edition)

   Abstract A new strategy for the synthesis of highly versatile cyclobutylboronates via the photosensitized [2+2]‐cycloaddition of alkenylboronates and alkenes is presented. The process is mechanistically different from other processes in that energy transfer occurs with the alkenylboronate as opposed to the other alkene. This strategy allows for the synthesis of an array of diverse cyclobutylboronates. The conversion of these adducts to other compounds as well as their utility in the synthesis of melicodenine C is demonstrated. 

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5. Mechanisms and Conformational Control of (4 + 2) and (2 + 2) Cycloadditions of Dienes to Keteniminium Cations

   https://doi.org/10.1021/acs.joc.9b03340  

   Ramirez, Melissa; Li, Wenfei; Lam, Yu-hong; Ghosez, Léon; Houk, K. N. (December 2019, The Journal of Organic Chemistry)

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