A general method for the separation of amphiphilic surface-active poly(ethylene glycol) mono- and di-esters with long-chain ionic liquid-based biphasic systems was written by Kong, Liyun;Yang, Qiwei;Xing, Huabin;Su, Baogen;Bao, Zongbi;Zhang, Zhiguo;Yang, Yiwen;Ren, Qilong. And the article was included in Green Chemistry in 2014.Name: 1-Dodecylpyridin-1-ium bromide This article mentions the following:
A new method for the effective separation of amphiphilic poly(ethylene glycol) mono- and di-esters with long-chain ionic liquid-based biphasic systems has been developed. These biphasic systems exhibited high selectivity, a large distribution coefficient and a good ability to eliminate the emulsification resulting from the surface active character of those amphiphilic mols. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Name: 1-Dodecylpyridin-1-ium bromide).
1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. In contrast to benzene, Pyridine’s electron density is not evenly distributed over the ring, reflecting the negative inductive effect of the nitrogen atom. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Name: 1-Dodecylpyridin-1-ium bromide