The present invention relates to methods of reducing ketal acids, salts and esters to form corresponding ketal alcohols. More particularly, the reducing methods convert the ketal acids, salts, or esters to ketal alcohols by using a reducing agent that comprises a hydride that comprises one or more alkoxy moieties. The ketal alcohol is prepared in a hydrophobic reagent. This is purified by washing the hydrophobic reagent with one or more water washes. Because the ketal alcohol has some water solubility, the water washes are back-extracted with a hydrophobic solvent to recover additional ketal alcohol from such one or more water washes. The alcohol products are useful in many applications such as intermediates in the synthesis of pharmacologically important molecules.
本发明涉及将
酮酸、盐和酯还原为相应的酮醇的方法。更具体地说,还原方法通过使用包含一个或多个烷氧基的
氢化物的还原剂将
酮酸、盐或酯转化为酮醇。酮醇是在疏
水试剂中制备的。通过用一个或多个
水洗涤疏
水试剂来纯化。由于酮醇具有一定的
水溶性,所以
水洗涤用疏
水溶剂进行反萃取,以从一个或多个
水洗涤中回收额外的酮醇。这些
醇类产品在许多应用中很有用,例如在合成药理学重要分子的中间体中。