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1. Ni-catalyzed 1,2-benzylboration of 1,2-disubstituted unactivated alkenes

   https://doi.org/10.1039/C9SC04199K  

   Joung, Seewon; Bergmann, Allison M.; Brown, M. Kevin (December 2019, Chemical Science)

   Nickel-catalyzed 1,2-carboboration of alkenes is emerging as a useful method for chemical synthesis. Prior studies have been limited to only the incorporation of aryl groups. In this manuscript, a method for the 1,2-benzylboration of unactivated alkenes is presented. The reaction combines readily available alkenes, diboron reagents and benzylchlorides to generate synthetically versatile products with control of stereochemistry. The utility of the products as well as the mechanistic details of the process are also presented. 

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2. Spirocyclic Products via Carbene Intermediates from Thermolysis of 1,2-Dialkynylpyrrole and 1,2-Diethynylimidazole

   https://doi.org/10.1055/s-0041-1737937  

   Jewett, Ashley L.; Bondoc, Joshua A.; Gilbreath, Bradford L.; Reinus, Brandon J.; Kerwin, Sean M. (April 2022, Synlett)

   Abstract The thermal rearrangements of 1,2-dialkynylimidazoles have been shown to lead to trapping products of cyclopenta[b]pyrazine carbene intermediates. Here we show that a similar rearrangement also occurs in the case of 1,2-diethynyl-1H-pyrrole, and that trapping the intermediate cyclopenta[b]pyridine carbene with solvent THF affords an ylide that undergoes a Stevens rearrangement to a spirocyclic product. An analogous rearrangement and trapping is observed for thermolysis of 1,2-dialkynylimidazoles in THF or 1,4-dioxane. 

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3. trans -Diamminebis(1,2-dicyanoethene-1,2-dithiolato)platinum(IV)

   https://doi.org/10.1107/S2414314620009803  

   Siddiqui, Mahaa J.; Nesterov, Volodymyr V.; Steidle, Matthew T.; Smucker, Bradley W. (July 2020, IUCrData)

   The title compound, [Pt(C 4 N 2 S 2 ) 2 (NH 3 ) 2 ], represents an octahedral platinum(IV) complex with two trans- ammine and two mnt (mnt = 1,2-dicyanoethene-1,2-dithiolato) ligands. The Pt—N and Pt—S distances are consistent with those in other platinum(IV) complexes. As a result of a slight canting of the coordination of the mnt ligand to the platinum(IV) atom, the nitrile nitrogen atoms are positioned suitably to hydrogen-bond with adjacent ammines. 

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4. Photoactivatable 1,2-dioxetane chemiluminophores

   https://doi.org/10.1016/j.rechem.2021.100106  

   Ryan, Lucas S.; Nakatsuka, Andrew; Lippert, Alexander R. (January 2021, Results in Chemistry)

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5. Nickel-Catalyzed 1,2-Carboamination of Alkenyl Alcohols

   https://doi.org/10.1021/jacs.1c07112  

   Kang, Taeho; Kim, Nana; Cheng, Peter T.; Zhang, Hao; Foo, Klement; Engle, Keary M. (August 2021, Journal of the American Chemical Society)

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