2, 6-di(aryl)-anthraquinone and preparation method thereof
An aromatic group and anthraquinone technology, which is applied in the field of symmetrical anthraquinone derivatives, can solve the problems of easy decomposition, weak photochemical stability, and restrictions on the application of thin films, and achieve good optical stability and thermal stability. Resistant to photodecomposition and long-lasting effect
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Embodiment 1
[0024] 2, the preparation of 6-bis (4-methoxystyryl)-anthraquinone comprises the following steps:
[0025] With 2,6-dibromo-anthraquinone (15 grams), 4-methoxystyrene (8.6 grams), palladium acetate (0.9 grams), three-O-cresyl phosphorus (0.7 grams,) in a nitrogen atmosphere Under certain conditions, it was added to triethylamine solvent, stirred and heated at 75°C for 48 hours. Cool to room temperature after the reaction, distill under reduced pressure, separate and wash, dry and concentrate. The target product 2,6-bis(4-methoxystyryl)-anthraquinone was separated by chromatography column, 11.8 g, yield 73%.
Embodiment 2
[0027] Synthesis of 2,6-bis(4-aminostyryl)-anthraquinone
[0028] With 2,6-dibromo-anthraquinone (15 grams), 4-aminostyrene (9.2 grams), palladium acetate (1.2 grams), three-O-cresyl phosphorus (0.7 grams) under nitrogen protection atmosphere conditions, Add it to triethylamine, stir and heat at 90°C for 48 hours. Cool to room temperature after the reaction, distill under reduced pressure, separate and wash, dry and concentrate. The target product 2,6-bis(4-aminostyryl)-anthraquinone was separated by chromatography column, 13.3 g, yield 76%.
Embodiment 3
[0030] Synthesis of 2,6-bis(4-chlorostyryl)-anthraquinone
[0031] With 2,6-dibromo-anthraquinone (15 grams), 4-chlorostyrene (9.4 grams), palladium acetate (1 gram), three-O-cresyl phosphorus (0.7 grams) under nitrogen protection atmosphere conditions, Add it to triethylamine, stir and heat at 90°C for 24 hours. Cool to room temperature after the reaction, distill under reduced pressure, separate and wash, dry and concentrate. The target product 2,6-bis(4-chlorostyryl)-anthraquinone was separated by chromatography column, 9.4 g, yield 65%.
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