1,3-propanesultone derivative useful in the preparation of a 1,3-propenesultone derivative
申请人:Wako Pure Chemical Industries, Ltd.
公开号:EP2757102A1
公开(公告)日:2014-07-23
The present invention is directed to provide an efficient production method which is capable of not only obtaining a cyclic sulfonic acid ester (sultone) at low cost and in high yield, but also the sulfonic acid ester (sultone) stably even in a commercial scale. The present invention relates to a method for producing hydroxysultone comprising a first step where a diol having a specified structure and a thionyl halide are reacted to obtain a cyclic sulfite having a specified structure, and a second step where the cyclic sulfite is reacted with water or/and alcohol; a method for producing an unsaturated sultone having a specified structure comprising a third step where a hydroxylsultone having a specified structure is reacted with an acid halide or an acid anhydride to obtain an intermediate, subsequently the intermediate is treated with a base; as well as a cyclic sulfite having a specified structure.
本发明旨在提供一种高效的生产方法,该方法不仅能够低成本、高产率地获得环状磺酸酯(磺内酯),而且即使在商业规模上也能稳定地获得磺酸酯(磺内酯)。本发明涉及一种生产羟基磺酸内酯的方法,包括第一步:具有特定结构的二元醇与亚 硫酰卤反应,得到具有特定结构的环状亚硫酸盐;第二步:环状亚硫酸盐与水或/和醇反应;一种生产具有特定结构的不饱和舒尔酮的方法,包括第三步:具有特定结构的羟基舒尔酮与酸卤化物或酸酐反应,得到中间体,然后用碱处理中间体;以及具有特定结构的环状亚硫酸盐。