2688-96-2Relevant articles and documents
Mixed-valent transition metal-phosphoranimide catalysts
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Page/Page column 16, (2015/04/15)
Phosphoranimide-metal catalysts are disclosed. The catalysts comprise first row transition metals such as nickel, cobalt or iron. The hydrocarbon-soluble catalysts have a metal to anionic phosphoranimide ratio of 1:1, and have no inactive bulk phase and no dative ancillary ligands. The electronic state of the clusters can be adjusted to optimize catalytic activity for a range of commercially important reductive transformations, including hydrodesulfurization. A method of synthesis of these catalysts by anionic metathesis of a halide substituted precursor followed by oxidation is also disclosed.
Reductive desulfurization of organosulfur compounds with sodium in liquid ammonia
Yu, Zhengkun,Verkade, John G.
, p. 79 - 82 (2007/10/03)
Greater than 95% sulfur removal was observed when dialkyl mono or polysulfides were treated with Na in liquid ammonia. Polycyclic aromatic sulfur heterocycles were only moderately desulfurized under these conditions while phenylthio derivatives gave thiophenol as the major product and dithiophenols as the minor products.