红外光谱鉴定混合树脂的结构

红外光谱是高分子聚合物鉴定最常用的方法之一。通过单点衰减全反射及透射方法对比分析,鉴定了3种混合树脂的结构。     

Efficient C N formation for preparing α-branched primary amines by recycled intramolecular reactions of 1,8-naphthosultoneusing ammonia as nitrogen source

Amination of tertiary and secondary alcohols using aqueous ammonia as nitrogen source was carried out by a process with recyclable intramolecular reaction of 1,8-naphthosultone, which lead to α-branched primary amines. Sulfonic resin serves as the heterogeneous catalyst for CN bond formation and protects the neighboring hydroxyl group until the required hydrolysis starts in the alkaline solution. The process can be conducted under mild conditions, no additional solvent is needed and no overreaction to secondary or tertiary amines occurs.     

现代分析化学网络开放教学平台的构建

网络开放教学平台是研究性学习和自主学习新型教学模式的载体,是体现网络教学优势的关键。网络教学与课堂教学的有机结合是教学改革的热点问题。本文主要探讨了现代分析化学网络开放教学平台的设计思想、基本特征、基本框架和功能。     

C.I.分散黄71中间体的结构表征

合成了C.I.分散黄71染料中间体并用核磁共振谱和红外光谱表征了它们的结构.用gCOSY、gHSQC和gHMBC二维谱分别确定了其1H和13C NMR谱带的化学位移,同时报道了它们的红外光谱.