3-エチル-3-オキセタンメタノール 化學(xué)特性,用途語(yǔ),生産方法
外観
無(wú)色～ほとんど無(wú)色透明液體
化學(xué)的特性
clear colorless liquid
使用
3-Ethyl-3-oxetanemethanol is used as pharmaceutical intermediate.
主な応用
Poly(3-ethyl-3-oxetanemethanol) could be used as a core to synthesize amphiphilic hyperbranched polyethers (AHPs), which have multiple linear poly-(ethylene glycol) arms. The AHPs owned good dispersion performance for coating pigment particles. Among AHP's products, AHP47 with 0.47 DB had good potential in coating applications. can also be used to synthesize azobenzene-focused hyperbranched poly(3- ethyl-3-oxetanemethanol)[1-2].
Synthesis Reference(s)
Journal of the American Chemical Society, 79, p. 3455, 1957
DOI: 10.1021/ja01570a038
合成
3-Ethyl-3-oxetanemethanol was prepared by a modified procedure described in the literature. A mixture of trimethylopropane (1, 26.8 g, 0.2 mol), diethyl carbonate (23.6 g, 0.2 mol) and potassium hydroxide (0.1 g, 1.8 mmol) in 2 ml absolute ethyl alcohol was refluxed in oil bath at 110C for 1 h. Then, the mixture was distilled at 110C for 1 h. Distillation was continued until the temperature of oil bath reached 140C. After the distillation, the vacuum was supplied for 1 h to remove the excess solvent. On heating above 185C, the distilled materials were collected in a cold trap under vacuum and obtained >85% of the theoretical yield. 1H-NMR (CDCl3, δ, ppm): 0.80–0.83 (t, 3H, –CH2CH3), 1.61–1.66 (q, 2H, –CH2CH3), 3.62 (s, 2H, –CH2OH), 3.66 (s, 1H, –CH2OH), 4.31–4.32 and 4.38–4.39 (d, 4H, –CH2O).
3-エチル-3-オキセタンメタノール 上流と下流の製品情報(bào)
原材料
準(zhǔn)備製品