New Generation of Nitrite Functionalized Star-like Polyvinyl Imidazolium Compound: Application as a Nitrosonium Source and Three Dimensional Nanocatalyst for the Synthesis of Azo Dyes
作者:Ashkan Shomali、Hassan Valizadeh、Saeideh Noorshargh
DOI:10.2174/1570178614666170321125216
日期:2017.6.14
Background: The compounds with three-dimensional and ionic structures have attracted
considerable attentions because of their unique characteristics as a drug carrier and catalyst. Star-like
poly ionic compounds are a new generation of three-dimensional structures which have both; the exclusive
ionic features and three-dimensional structures. Recently, we reported the synthesis of diazonium
salts from aniline derivatives using carboxyl and nitrite functionalized graphene quantum dots.
Methods: Nitrite-functionalized star-like polyionic (NFSP) compound was synthesized as a new generation
of three-dimensional nanocatalyst. Herein, the use of NFSP as an efficient reagent and nanocatalyst
for the diazotization of aniline derivatives and subsequent synthesis of azo dyes via the reaction
with active phenolates under solvent-free conditions was reported.
Results: In order to demonstrate the positive impact of NFSP efficiency, the reaction times and yields
of the products were compared with other methods and catalysts which have been reported previously.
The brilliant performance of NFSP can be ascribed to multifunctional reagent and also trapping the ingredient
within catalyst cavities.
Conclusion: A highly effective and cost-effective method has been developed for the preparation of
azo dyes. In reported method, new three-dimensional catalyst with highly ionic characteristic and multifunctional
nitrosonium source is available. These special features reduced the required amount of
catalyst, reaction time and also increased the efficiency of catalyst.
背景:具有三维和离子结构的化合物因其作为药物载体和催化剂的独特特性而备受关注。星状多离子化合物是新一代的三维结构化合物,同时具有独特的离子特性和三维结构。最近,我们报道了利用羧基和亚硝基功能化石墨烯量子点从苯胺衍生物中合成重氮盐的方法:合成了亚硝酸盐功能化星状多离子(NFSP)化合物,作为新一代三维纳米催化剂。结果:为了证明 NFSP 效率的积极影响,将反应时间和产物产率与之前报道过的其他方法和催化剂进行了比较。 NFSP 的出色性能可归因于多功能试剂以及催化剂空腔内成分的捕获。 结论:已开发出一种高效、经济的偶氮染料制备方法。在报告的方法中,新型三维催化剂具有高离子特性和多功能硝基锍源。这些特点不仅减少了催化剂的用量,缩短了反应时间,还提高了催化剂的效率。