Ethyl acetate and tea leaves are decaffeinated with this solvent. It is also used in paints as an activator or hardener. Ethyl acetate is present in confectionery, perfumes, and fruits. In perfumes, it evaporates quickly, leaving only the scent of the perfume on the skin. In the laboratory, mixtures containing ethyl acetate are commonly used in column chromatography and extractions. Ethyl acetate is rarely selected as a reaction solvent because it is prone to hydrolysis and transesterification. Ethyl acetate is fairly volatile at room temperature and has a boiling point of . Due to these properties, it can be removed from a
2-Ethyl-2-oxazoline ring-opening polymerization of 2-ethyl-2-oxazoline can be initiated by alkylation with e.g. methyl tosylate or triflates (in particular methyl triflate) and leads to the water-soluble poly(2-ethyl-2-oxazoline) which is a propionyl-substituted linear polyethylenimine and can also be seen as a pseudo-polypeptide. The polymerization of 2-ethyl-2-oxazoline can also be carried out as living cationic polymerization. Copolymers with other 2-alkyl-2-oxazolines and other monomers allow the preparation of random copolymers and block copolymers. The copolymers obtained can be used as biocompatible drug carriers, in coatings and adhesives, and in many other applications. The elimination of the propionyl group from poly (2-ethyl-2-oxazoline) yields linear polyethyleneimine. 2-Ethyl-2-oxazoline