利用1-(3-芳基)-3-(二甲氨基)丙-2-烯-1-酮(烯胺酮)衍生物和对氯苯胺的重氮盐高产率合成了几种新型分散偶氮染料,并利用一种环保的方法。在 100 和 130 °C 下,我们使用新型合成分散染料对涤纶织物进行染色。在不同温度下,评估染色织物的颜色强度。我们获得的结果表明,采用 130 °C 高温法染色比采用 100 °C 低温法染色增强。重复使用染浴一两次是同时实现两个目标的一种方法。第一个是免费获得染色产品,第二个是处理染浴废水并再次利用的方法。用分散染料染色的涤纶的牢度特性得到了良好的结果。当分散染料针对某些类型的微生物和癌细胞进行测试时,它们显示出良好且令人鼓舞的发现,表明它们具有用作抗氧化剂和抗菌剂的潜力。
Arylhydrazonals as the aldehyde component in Baylis–Hillman reactions
作者:Nouria A. Al-Awadi、Maher R. Ibrahim、Ismail A. Abdelhamid、Mohamed H. Elnagdi
DOI:10.1016/j.tet.2008.06.026
日期:2008.8
Arylhydrazonals were added to acrylonitrile or methyl vinyl ketone in the presence of DABCO or benzotriazole to yield the intermediate Baylis-Hillman adduct that cyclized under the reaction conditions with water elimination to yield dihydropyridazines. A pyridazine reacted with DMAD to yield a pyridine via a [4+2] Diels-Alder addition followed by retro Diels-Alder elimination of methylene aniline. Two pyridazines were condensed with DMFDMA to yield the corresponding enaminones that reacted with NH2NH2 to afford the pyrazolylpyridazines. (C) 2008 Published by Elsevier Ltd.