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Peripherally Substituted Octa-alkoxyphthalocyanines

The synthesis of peripherally substituted octa-alkoxyphthalocyanines is straightforward (Scheme 49) [186]. Catechol is alkylated then brominated to give a dialkoxydi-bromobenzene. Reaction with copper cyanide in DMF affords the phthalonitrile, which can be converted to a phthalocyanine under standard cyclization conditions. The lithium alkoxide/alcohol method is usually avoided to prevent any possibility of transetherification. [Pg.1748]

Scheme 49. Synthesis of peripherally substituted octa-alkoxyphthalocyanines. Reagents (a) RX/base (b) Brz (c) CuCN/DMF. Scheme 49. Synthesis of peripherally substituted octa-alkoxyphthalocyanines. Reagents (a) RX/base (b) Brz (c) CuCN/DMF.
Table 48. Transition temperatures for peripherally substituted octa-alkoxyphthalocyanines. Table 48. Transition temperatures for peripherally substituted octa-alkoxyphthalocyanines.
See other pages where Peripherally Substituted Octa-alkoxyphthalocyanines is mentioned: [Pg.232]    [Pg.974]    [Pg.1499]    [Pg.1748]    [Pg.1756]    [Pg.232]    [Pg.974]    [Pg.1499]    [Pg.1748]    [Pg.1756]   


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