A process for preparing 3-hydroxyoxetane comprising the following steps in order (1) reacting a carboxylic acid of the formula CH.sub.3 (CH.sub.2).sub.n COOH with epichlorohydrin in the presence of anhydrous ferric chloride to produce an ester of the formula ##STR1## wherein n is an integer of from 0 to 3; (2) protecting the secondary hydroxy group of the ester with a blocking group, Z, that is stable to bases; thus forming a blocked ester of the formula ##STR2## (3) hydrolyzing the blocked ester formed in step (2) with an aqueous base to remove the carboxylic acid and form a 3-hydroxyoxetane derivative of the formula ##STR3## in which Z represents the blocking group; (4) removing the blocking group from the 3-hydroxyoxetane derivative by heating it with an alcohol and an acid to form the product 3-hydroxyoxetane, ##STR4##
制备3-羟基氧杂
环丙烷的过程包括以下步骤(1)按顺序反应具有CH.sub.3(CH.sub.2).sub.n COOH分子式的
羧酸与
环氧氯丙烷在无
水三氯化铁存在下反应,得到具有以下分子式的酯:其中n为0至3的整数;(2)用稳定于碱的阻断基Z保护酯的次级羟基,从而形成具有以下分子式的阻断酯:(3)用
水性碱
水解步骤(2)中形成的阻断酯,去除
羧酸并形成具有以下分子式的3-羟基氧杂
环丙烷衍
生物:其中Z代表阻断基;(4)通过与醇和酸加热去除3-羟基氧杂
环丙烷衍
生物中的阻断基,形成产物3-羟基氧杂
环丙烷。