Iron-mediated synthesis of C.I. pigment violet 23 and triphenodioxazine -based derivatives: A novel and efficient approach
作者:Zhijie Ma、Chengtao Fang、Bingyun Zheng、Xiaoli Han、Xiaohui Xiao
DOI:10.1016/j.dyepig.2024.111983
日期:2024.5
A novel and efficient method for the synthesis of Pigment Violet 23 and triphenodioxazine (TPDO)-based derivatives has been developed through safe, low-cost iron-mediated and green air-assisted oxidative cyclization. Using this method, Pigment Violet 23 and a variety of substituted TPDO derivatives were afforded in good to excellent yields. The characteristic UV–vis absorption wavelength of our prepared
通过安全、低成本的铁介导和绿色空气辅助氧化环化,开发了一种新颖有效的合成颜料紫 23 和三苯二恶嗪 (TPDO) 衍生物的方法。使用这种方法,颜料紫 23 和各种取代的 TPDO 衍生物的产率良好至优异。我们制备的 CI 颜料紫 23 (λ: 546, 588 nm) 在 1,4-二恶烷中的特征紫外-可见吸收波长与商业 CI 颜料紫 23 (λ: 542, 589 nm) 几乎相同,并且其衍生物在 500-650 nm 范围内表现出两个强烈的尖峰。此外,衍生物 、 、 、 的强烈锐峰在 450–550 nm 范围内。此外,对3-丁基取代的化合物产生的两种异构体进行了分离和验证,这可以进一步证实制备的CI颜料紫23是、和的混合物。