The present invention includes a process for enantioselective preparation of a non-racemic compound, which is either usable as a fragrance or flavor component or is convertible to a fragrance or flavor component by one or more additional reaction steps. The process includes the step of contacting either a substrate capable of forming a non-racemic compound by an enantioselective reaction and a co-reactant in the presence of a non-racemic catalyst, or a non-racemic or enantiopure substrate and a co-reactant, optionally in the presence of a racemic or non-racemic catalyst. The contacting is carried out at a temperature and length of time that is sufficient to produce the non-racemic compound with high optical purity. The process is used in stereoselective preparation of enantiomerically enriched intermediates useful in the preparation of non-racemic, chiral flavor and fragrance components.
本发明涉及一种对映选择性制备非外消旋化合物的方法,该化合物可用作
香料或风味成分,或通过一个或多个附加反应步骤转化为
香料或风味成分。该方法包括在非外消旋催化剂存在下,将能够通过对映选择性反应形成非外消旋化合物的底物和共反应剂接触,或将非外消旋或对映纯底物和共反应剂接触,选项地在外消旋或非外消旋催化剂存在下。接触在足以产生高光学纯度的非外消旋化合物的温度和时间下进行。该方法用于立体选择性制备对映富集的中间体,该中间体在制备非外消旋手性
香料和风味成分中有用。