1835-65-0, name is 3,4,5,6-Tetrafluorophthalonitrile, belongs to nitriles-buliding-blocks compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. HPLC of Formula: C8F4N2
First raw material 4,5-bis (pentafluorophenyl) -3,6-difluoro-phthalonitrile were prepared as follows: A 200ml reaction vessel equipped with a dropping funnel and a thermometer tetrafluorophthalonitrile 20.1 g ( 100.45mmol), potassium fluoride 13.99g (240.79mmol), was added to the methyl isobutyl ketone 130ml.After cooling with an ice-bath, conducted from the dropping funnel, was added slowly a solution of pentafluorophenol 37.0g (201.02mmol) of methyl isobutyl ketone 70 ml, then the reaction was stirred for 2 days at room temperature It was.Except inorganic salt and the reaction solution was filtered, washed with water using a separatory funnel, was dehydrated with anhydrous sodium sulfate, the reaction solution was concentrated in an evaporator.The concentrate, by re-precipitation purification with toluene / hexane solvent, 4,5-bis (pentafluorophenyl) -3,6-difluoro phthalonitrile, 70.83percent yield (37.4g, 70.81mmol obtained in).
The synthetic route of 1835-65-0 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Ehime University; Nippon Shokubai Co.,Ltd.; Uno, Hidemitsu; Masuda, Tsuyoshi; (27 pag.)JP5656235; (2015); B2;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts