A hydroxyl-functionalized homochiral porous organic cage for gas chromatographic separations was written by Li, Hong-Xing;Xie, Tian-Peng;Yan, Ke-Qian;Xie, Sheng-Ming;Wang, Bang-Jin;Zhang, Jun-Hui;Yuan, Li-Ming. And the article was included in Microchimica Acta in 2020.Category: esters-buliding-blocks This article mentions the following:
A hydroxyl-functionalized homochiral porous organic cage (POC) was synthesized and characterized by FTIR, NMR, thermogravimetric anal. (TGA), MALDI-TOF-MS, and elemental anal. The synthesized homochiral POC was used as stationary phase to prepare a capillary gas chromatog. (GC) column by a static coating method. The fabricated column shows excellent selectivity not only for the separation of positional isomers but also for the resolution of various racemates. Thirty-nine racemates have been resolved on the column, including alcs., diols, halohydrocarbons, epoxides, esters, lactones, ketones, ethers, and organic acids. Compared to the com. β-DEX 120 column and previously reported chiral POCs (CC3-R, CC9, and CC10)-coated columns, there are 11, 10, 24, and 15 tested racemates that cannot be resolved on β-DEX 120 column, CC3-R column, CC9 column, and CC10 column, resp. This reveals that the fabricated column has prominent complementarity or superior separation performance to these columns in enantioseparation Besides, the fabricated column can achieve some enantioseparations which are not possible using all previously reported chiral POC-based columns. Some positional isomers (xylenes, dichlorobenzenes, dibromobenzenes, nitrochlorobenzenes, and nitrobromobenzenes) were also separated with high-resolution values. The column exhibits good repeatability, reproducibility, and stability. In the experiment, the researchers used many compounds, for example, 5-Ethyldihydrofuran-2(3H)-one (cas: 695-06-7Category: esters-buliding-blocks).
5-Ethyldihydrofuran-2(3H)-one (cas: 695-06-7) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Category: esters-buliding-blocks
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics