345-18-6Relevant articles and documents
Catalyst and application thereof in synthesis of aromatic fluorine compounds
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Paragraph 0045-0047, (2020/11/10)
The invention belongs to the field of catalyst preparation and application, and particularly relates to a catalyst and application thereof in synthesis of aromatic fluorine compounds. The nickel catalyst is dichloro-bis-(tri-cyclohexylphosphine) nickel, and the molecular formula of the nickel catalyst is Ni (Py3) 2Cl2. The nickel catalyst is applied to catalyzing inorganic fluoride to replace aromatic chloride to synthesize fluoride. The catalyst has the advantages of easily available reagents, simple catalyst synthesis, simple operation conditions, low reaction temperature, high reaction yield and less time consumption.
A polymer onium acting as phase-transfer catalyst in halogen-exchange fluorination promoted by microwave
Luo, Jun,Lü, Chunxu,Cai, Chun,Qü, Wenchao
, p. 701 - 704 (2007/10/03)
A polymerized quaternary ammonium salt polydiallyldimethylammonium chloride, exhibiting high stability to heat and base, was prepared and applied as phase-transfer catalyst (PTC) in halogen-exchange (Halex) fluorination of chloronitrobenzenes to give excellent yields of corresponding fluoronitrobenzenes. Dimethyl sulfoxide was found to be the best solvent when microwave was applied as heating resource.
Methylhexamethylenetetramine fluoride dihydrate: A new fluorodenitration reagent
Clark, James H.,Nightingale, David J.
, p. 91 - 93 (2007/10/03)
Methylhexamethylenetetramine fluoride dihydrate has been prepared by conventional methods. It is moderately soluble in polar aprotic solvents, and shows good thermal stability, enabling it to be dried. The reagent is capable of converting activated nitroaromatics to the corresponding fluoroaromatics, with a high selectivity to monofluorodenitration being observed with some polysubstituted aromatics.