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Welcome back, Im That Chemist, and today we have five important papers in organic synthesis for the month of December 2022. The first paper for today is a very important paper involving the haloboration of carbonyls. Some highlights of this paper include the conversion of aldehydes and ketones into -haloboronates. This involves the removal of the oxygen and the installation of both the halogen atom as well as a Bpin group. This is a two-step one-pot process that features an excellent scope. Additionally, the authors demonstrated that enantioselective conditions were possible. Now while this paper lacked an investigation into the mechanism, I would propose the following: first, B₂pin₂ is able to be installed under catalytic conditions with copper, this affords this -Bpin boronate; then, once a TMS halide is added, the TMS group is able to coordinate to the oxygen of the boronate, and this would make this into a better leaving group, and then the halide could displace this as a leavi