Methods for preparing an octane-boosting fuel additive having the following formula: are provided. In a first aspect, the method may comprise carrying out the following reaction: (i), (ii) In a second aspect, the method may comprise: (1) preparing the fuel additive; and (2) purifying the product of step (1) by: (a) dissolving the fuel additive in a water-insoluble solvent to form a solution; (b) washing the solution with water; and (c) separating the fuel additive product from the water-insoluble solvent using distillation. Steps (i) and (1) of the methods are carried out in the presence of butylated hydroxytoluene.
本发明提供了制备具有下式的
辛烷增效燃料添加剂的方法。在第一方面,该方法可包括进行以下反应:(i)、(ii) 在第二方面,该方法可包括:(1) 制备燃料添加剂;(2) 通过以下方法纯化步骤(1)的产物:(a) 将燃料添加剂溶解在不溶于
水的溶剂中形成溶液;(b) 用
水洗溶液;(c) 用蒸馏法将燃料添加剂产品与不溶于
水的溶剂分离。上述方法的步骤(i)和步骤(1)是在丁基羟基
甲苯存在的情况下进行的。