Preparation and application of leveling cationic fluorescent dye containing long carbon chain
A technology of fluorescent dyes and cations, which is applied in the preparation and application field of level dyeing cationic fluorescent dyes, can solve problems such as insufficient level dyeing, and achieve excellent color fastness, excellent color fastness, and color yield high effect
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Embodiment 1
[0043] (1) Add 100 mL of ethanol and 10.0 g of 4-bromo-1,8-naphthalenedicarboxylic acid anhydride successively to a 250 mL three-necked flask, raise the temperature to 50°C, and gradually add 5.45 mL of N,N-dimethylpropanediamine dropwise , and the temperature was raised to 78°C after the dropwise addition, and stirred. The whole process was monitored by TLC, and the developing solvent was petroleum ether: ethyl acetate=2:1 (v / v). After 30min, the reaction was completed, cooled to room temperature, poured the reaction solution into water, the system became turbid, stirred for 10min, and allowed to stand for 1h, a large amount of solid was precipitated, suction filtration, the filter cake was collected, and dried to obtain 10.56g of 4-bromo-N -(N,N-Dimethyl)propylamino-1,8-naphthalimide.
[0044] (2) 6.40g of 4-bromo-N-(N,N-dimethyl)propylamino-1,8-naphthalimide and 21mL of ethylene glycol monomethyl ether were added to a 100mL three-necked flask, and added while stirring 19....
Embodiment 2
[0048] (1) Add 100mL of ethanol and 10.0g of 4-bromo-1,8-naphthalene dicarboxylic anhydride to a 250mL three-necked flask, raise the temperature to 50°C, and gradually add 5.45mL of N,N-dimethylpropylenediamine , after the dropwise addition was completed, the temperature was raised to 78°C and stirred. The whole process was monitored by TLC, and the developing solvent was petroleum ether: ethyl acetate = 2:1 (v / v). After 30 minutes, the reaction was completed, cooled to room temperature, the reaction solution was poured into water, the system became turbid, stirred for 10 minutes, and left to stand for 1 hour, a large amount of solids precipitated, filtered with suction, collected the filter cake, and dried to obtain 10.56g of 4-bromo-N -(N,N-Dimethyl)propylamino-1,8-naphthalimide.
[0049] (2) Add 5.52g of 4-bromo-N-(N,N-dimethyl)propylamino-1,8-naphthalimide and 30mL of ethylene glycol monomethyl ether into a 100mL three-necked flask, and add while stirring 29.70mL dodecyl...
Embodiment 3
[0053] (1) Add 100mL of ethanol and 10.0g of 4-bromo-1,8-naphthalene dicarboxylic anhydride to a 250mL three-necked flask, raise the temperature to 50°C, and gradually add 5.45mL of N,N-dimethylpropylenediamine , after the dropwise addition was completed, the temperature was raised to 78°C and stirred. The whole process was monitored by TLC, and the developing solvent was petroleum ether: ethyl acetate = 2:1 (v / v). After 30 minutes, the reaction was completed, cooled to room temperature, the reaction solution was poured into water, the system became turbid, stirred for 10 minutes, and left to stand for 1 hour, a large amount of solids precipitated, filtered with suction, collected the filter cake, and dried to obtain 10.56g of 4-bromo-N -(N,N-Dimethyl)propylamino-1,8-naphthalimide.
[0054] (2) Add 3.00g of 4-bromo-N-(N,N-dimethyl)propylamino-1,8-naphthalimide and 36mL of ethylene glycol monomethyl ether into a 100mL three-necked flask, and add while stirring 17.00g hexadecy...
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