化学合成;材料科学。
化学合成;材料科学
合成路线 1(1. 合成:3383-83-3)
产率:100%
合成条件:With sulfuric acid; hydrogen bromide In water at 120 - 125℃; for 3 h;
实验步骤:实施例1外消旋的1-溴-3,7-二甲基辛烷(二氢吡咯烷溴化物)在搅拌下将浓硫酸(17mL)加入到48%的氢溴酸(100mL)中,然后加入3,7-二甲基辛醇(二氢硝基醇,Aldrich,67mL) 向混合物中加入100g)。 然后将混合物加热至120-125℃,并在该温度下保持3小时。 冷却反应,并萃取到庚烷(300mL)中。 用盐酸,水,碳酸氢钠溶液洗涤庚烷层,干燥并浓缩,得到81.5g油状物。 将该油状物在120-125℃的浴温下真空蒸馏,得到溴化物产物,为油状物,b.p。 85-87℃/ 10mmHg,78.2g,100%收率。 质谱:m / z 220,222(M +)。
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