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- W4324133609 abstract "The sulfur-fluorine partnership occupies a privileged position in fluorine chemistry given the functional versatility that it imparts to organic structures. Despite this, available methodologies to forge S-F bonds are limited compared to C-F bond formation. Here, we describe a synthetic protocol that selectively enables the oxidative halogenation of aliphatic, aromatic, and heteroaromatic thiols to their corresponding SF4 Cl, SO2 F and SF3 derivatives. Selective oxidation of thiols to either S(IV)-F or S(VI)-F compounds is achieved by employing bench-stable calcium hypochlorite as chlorine surrogate (CLOgen), in the presence of KF as fluoride source. Density functional theory (DFT) calculations provided insight into the mechanistic aspects of the transformation and rationalized the observed isomeric preference towards the SF4 Cl derivatives. Ultimately, this glovebox-free method selectively dispatches three classes of compounds upon reaction condition fine-tuning. Furthermore, first-in-class transformations are reported, including the preparation of aliphatic SF4 Cl intermediates, their transformation into aliphatic sulfur pentafluoride analogs, and post-functionalizations that allow accessing highly complex SF4 -bridged scaffolds." @default.
- W4324133609 created "2023-03-15" @default.
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- W4324133609 date "2023-05-22" @default.
- W4324133609 modified "2023-10-16" @default.
- W4324133609 title "De‐Risking S‐F Bond Formation: A Gas Cylinder‐Free Strategy to Access S(IV) and S(VI) Fluorinated Compounds**" @default.
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- W4324133609 doi "https://doi.org/10.1002/chem.202300361" @default.
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