1-Iodonaphthalene → N,N-Bis(3,4-dimethylphenyl)naphthalen-1-amine

Participants

Reaction Steps

In 100-ml three-neck flask were placed 7.2 g of 3,3',4,4'-tetramethyldiphenylamine synthesized in Example 3 (1), 12.2 g of 1-iodonaphthalene, 5 g of anhydrous potassium carbonate, 0.5 g of copper sulfate pentahydrate and 10 ml of n-tridecane, and after carrying out the reaction for 25 hours at 200° C. under a nitrogen gas atmosphere, the reaction mixture was cooled to room temperature. The reaction mixture was subjected to a column purification (solvent: n-hexane) with activated alumina and the solvent was distilled under reduced pressure. The residue was recrystallized from ethanol to provide 4.2 g of N,N-bis(3,4-dimethylphenyl)naphthalene-1-amine. (Melting point 125° to 127° C., light yellow crystals, IR spectrum shown in FIG. 5.)

Provenance & Evidence