Synthesis and characterization of chitosan pyridyl imine palladium (CPIP) complex as green catalyst for organic transformations
作者:Narendra Singh Chundawat、Sultan Pathan、Girdhar Pal Singh、Arup Saha Deuri、Payam Zarrintaj、Narendra Pal Singh Chauhan
DOI:10.1007/s11696-021-01526-w
日期:2021.6
pyridine has been used to prepare an intermediate, chitosan pyridyl imine (CPI), in first step and then in second step it is further reacted with Pd(OAc)2 to develop chitosan pyridyl imine palladium (CPIP) complex catalyst in a very simplistic way. The formed CPIP has been extensively characterized with respect to raw chitosan utilizing methods including FT-IR, pyrolysis GC–MS, XRD, XPS, FE-SEM, EDS
在这项工作中,使用2-乙酰基吡啶对壳聚糖进行改性已用于制备中间体壳聚糖吡啶基亚胺(CPI),第一步,然后在第二步中将其与Pd(OAc)2反应以非常简单的方式开发壳聚糖吡啶基吡啶亚胺钯(CPIP)复合催化剂。所形成的CPIP已通过包括FT-IR,热解GC-MS,XRD,XPS,FE-SEM,EDS,TGA-DTG和DSC在内的方法对原壳聚糖进行了广泛表征。TG-DSC研究表明,该催化剂在高达300°C的温度下具有热稳定性。该催化剂在将有毒污染物硝基苯还原为毒性较小的苯胺方面表现出出色的活性。还发现CPIP配合物在Suzuki-Miyaura和Heck的交叉偶联反应中具有出色的结果,因此,使用这种绿色催化剂,可以将有毒的膦配体排除在交叉偶联反应之外。这项研究为可持续化学中的有机转化提供了一种经济,环保的催化剂。