光照小球藻催化芳胺席夫碱C=N双键转移的研究

C=N双键转移是基本的化学过程,是把醛酮转化为伯胺的方法之一。酸或碱作为C=N双键转移常用的催化剂能产生污染,后处理成本也较高。本文采用室温下光照小球藻使芳胺席夫碱C=N双键转移,拓展了C=N双键转移的新途径。小球藻在接收光能以及传递光能方面起了关键作用。不同席夫碱其C=N双键转移效果不同,与该席夫碱转移前后分子的能量差有关。能量差成为推动双键转移的动力。近中性溶剂在把光能传递给底物、作用于底物使活泼氢容易离解下来等方面也起了一定的作用。产物结构经¹H NMR确证。

Study on C=N double bond transfer of arylamine Schiff base catalyzed by light chlorella

C=N double bond transfer is a basic chemical process,which is one of the ways to convert aldehydes and ketones into primary amines.Acid or base as a catalyst commonly used for C=N double bond transfer can cause pollution and higher post-treatment costs.In this paper,a new way of C=N double bond transfer of arylamine Schiff base was developed by using light irradiation of Chlorella at room temperature.Chlorella played a key role in receiving and transmitting light energy.The C=N double bond transfer effect of different Schiff bases was different,which was related to the energy difference of the molecules before and after the Schiff base transfer.Energy difference became the driving force for the transfer of double bonds.Near-neutral solvents also played a certain role in transferring light energy to the substrate,acting on the substrate to easily dissociate active hydrogen,etc.The structure of the product was confirmed by ¹H NMR.