A method for producing a novel phthalocyanine compound which excels in yield and purity, allows no introduction of a chlorine atom into the phthalocyanine skeleton, and possesses relatively bulky substituents is provided.
This method is characterized by causing an orthophthalonitrile compound having a substituent exhibiting smaller σp values than σm values in the Hammett's rule to react with a metal oxide in the presence of a compound forming in the aqueous solution thereof at 25°C an acid or conjugate acid having a dissociation index pKa (the logarithmic value of the reciprocal of the dissociation constant of the acid or conjugate acid) of not more than 7.0.
Method for production of halogen-containing phthalocyanine compound
申请人:Hirota Kouichi
公开号:US20050203293A1
公开(公告)日:2005-09-15
This invention relates to a method for for the production of a halogen-containing phthalocyaline compound by the cyclization of phthalonitrile compounds either singly or in combination with a metal compound, characterized in effecting the cyclization in an organic compound having a hydroxyl group and/or a carboxylic acid in an amount in the range of 0.01-10 mass parts per one mass part of the phthalonitrile compounds while continuing the introduction of an inert gas. This method, by using a solvent capable of serving as a specific oxygen source destined to participate in the reaction of complexing a metal compound introduced into a phthalocyanine dye, permits the production of a phthalocyanine compound inexpensively in a high yield.