Сообщение
Cherep » Вс окт 22, 2006 9:32 pm
Acryl esters of aliphatic glycols. Gareev, G. A.; Makarov, M. A. Zhurnal Organicheskoi Khimii (1967), 3(6), 1000-2.
Abstract
A mixt. of 72 g. CH2:CHCO2H, 62 g. HOCH2CH2OH, 200 ml. benzene, 0.66 g. a-nitroso-b-naphthol (I), and 2.01 g. concd. HCl was refluxed 3-3.5 hrs. with azeotropic removal of water. Neutralization of the mixt., filtration, and distn. gave 64% CH2:CHCO2CH2CH2OH b2 65°, d2020 1.1076, n20D 1.4545. Similarly, other glycol monoesters were prepd. (glycol, ester % yield, b.p./mm., d2020, and n20D given) HO(CH2)3OH, 70, 83-4°, 1.0660, 1.4461; HO(CH2)4OH, 80, 91-3°/4, 1.0403, 1.4518; HO(CH2)2O(CH2)2OH, 70, 115°/13, 1.1110, 1.4525; HO(CH2)2O(CH2)2O(CH2)2OH, 72, -, 1.1170, 1.4630. In the prepn. of triethylene glycol mono-acrylate, instead of I, pyrogallol was used.
