4-nitrophthalodinitrile

In the design of complex phthalocyanine structures with specific properties, substituted phthalocyanines play an important role. 4-Nitrophthalodinitrile 1484, a key starting material in the synthesis of tetranitrophthalocyanine 1485, is produced from 4-nitrophthalamide 1483 by dehydration with triflic anhydride in 91% yield [1126]. 

Typical procedure. 4-Nitrophthalodinitrile 1484 [1126] Under an argon atmosphere, 4-nitrophthalamide 1483 (12.27 g, 58.71 mmol) was suspended in dioxane/pyridine (4 1 125 mL). The suspension was cooled in an ice-bath and triflic anhydride (20.6 mL) was added dropwise. When the addition was complete, the ice-bath was re-... 

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See also in sourсe #XX -- [ , ]

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