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2-Bromopyridine reacts with butyllithium to give 2-lithiopyridine, [2] which is a versatile reagent. [3] Pyrithione can be prepared in a two-step synthesis from 2-bromopyridine by oxidation to the N-oxide with a suitable peracid followed by substitution using either sodium dithionite or sodium sulfide with sodium hydroxide to introduce the thiol functional group.
Pyrithione is the common name of an organosulfur compound with molecular formula C 5 H 5 NOS, chosen as an abbreviation of pyridinethione, and found in the Persian shallot. [4] It exists as a pair of tautomers, the major form being the thione 1-hydroxy-2(1H)-pyridinethione and the minor form being the thiol 2-mercaptopyridine N-oxide; it crystallises in the thione form. [5]
2-Bromopyridine; 3-Bromopyridine; 4-Bromopyridine; See also. Chloropyridine This page was last edited on 31 January 2024, at 20:06 (UTC). Text is available under the ...
2-Mercaptopyridine and the disulfide are chelating ligands. 2-mercaptopyridine forms the indium(III) complex In(PyS)3 complexes in supercritical carbon dioxide. [7] 2-Mercaptopyridine may also be used to coat porous media in order to purify plasmid DNA of impurities such as RNA and proteins at relatively quick timescales to similar methods.
Pyridine-borane (C 5 H 5 NBH 3, melting point 10–11 °C) is a mild reducing agent. structure of the Crabtree's catalyst. Transition metal pyridine complexes are numerous. [108] [109] Typical octahedral complexes have the stoichiometry MCl 2 (py) 4 and MCl 3 (py) 3. Octahedral homoleptic complexes of the type M(py) + 6 are rare or tend to ...
2-Aminopyridine is an organic compound with the formula H 2 NC 5 H 4 N. It is one of three isomeric aminopyridines. It is a colourless solid that is used in the production of the drugs piroxicam, sulfapyridine, tenoxicam, and tripelennamine. It is produced by the reaction of sodium amide with pyridine, the Chichibabin reaction. [3]
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Metal templating by Cu(II/III) acts as a Lewis acid to both activate the thiol ester and deliver R 2 (from either boron directly or via an intermediate Cu-R 2 species), which produces the ketone and a Cu-thiolate. A second equivalent of boronic acid is needed to break the copper sulfur bond and liberate copper back into the catalytic cycle.