1,3-二3-（环氧乙基甲氧基）丙基-1,1,3,3-四甲基二硅氧烷的合成

摘要

1,3-bis-(3-oxiranylmethoxy-propyl)-1,1,3,3-tetramethyl-disiloxane was synthesized in mild condition via hydrosilylation reaction between 1,1,3,3-tetramethyl-disiloxane and allyl glycidyl ether. Tetrahydrofuran was used as solvent and chloroplatinic acid as catalyst. The products was characterized by IR, 1H NMR and the mass spectrometry. The effects of the reaction conditions including the catalyst dosage, the reaction temperature, the solvent, the molar ratio of reactants and the reaction time on conversion rates were investigated. The molar conversion rate could reach 89.5%when the reaction conditions were as followings:the molar ratio of 1,1,3,3-tetramethyl-disiloxan to allyl glycidyl ether was 1:3, the amount of the catalyst was 0.016%based on the weight of 1,1,3,3-tetramethyl-disiloxan, and the reaction was stirred at 0-10℃ for 12 h in tetrahydrofuran.%采用1,1,3,3-四甲基二硅氧烷和烯丙基缩水甘油醚为原料，以氯铂酸为催化剂，以四氢呋喃为溶剂，在温和条件下经硅氢加成合成了1,3-二[3-(环氧乙基甲氧基)丙基]-1,1,3,3-四甲基二硅氧烷。产物经红外光谱、核磁共振氢谱和质谱表征。考查了催化剂用量、反应温度、溶剂、原料摩尔比和反应时间等因素对反应转化率的影响。当1,1,3,3-四甲基二硅氧烷和烯丙基缩水甘油醚的摩尔比为1：3，催化剂用量为1,1,3,3-四甲基二硅氧烷质量的0.016%，在0-10℃下于四氢呋喃溶剂中搅拌反应12 h，产物摩尔转化率可达89.5%。