Solvent-free tetrahydropyranylation of alcohols catalyzed by amine methanesulfonates
作者:Rui Wang、MingZhu Sun、Heng Jiang
DOI:10.1007/s11164-010-0222-6
日期:2011.1
A comparative study of tetrahydropyranylation of alcohols under various solvents or solvent-free conditions using different amine methanesulfonates as catalysts shows that tetrahydropyranyl ethers of alcohols are obtained under solvent-free conditions in good yields using catalytic amounts of triethylenediamine methanesulfonate, 1,6-hexanediamine methanesulfonate, diethylenetriamine methanesulfonate and pyridine methanesulfonate, respectively. The reaction occurs readily in short times at room temperature catalyzed by these catalysts, especially triethylenediamine methanesulfonate. Some of the major advantages of this procedure are that the catalysts are environmentally friendly, highly effective, and easy to prepare and handle. The reaction is also clean and needs no solvent, and the work-up is very simple.
不同溶剂或无溶剂条件下使用不同的胺甲磺酸盐作为催化剂对醇的四氢吡喃化反应的比较研究表明,在无溶剂条件下,使用催化量的三亚乙基二胺甲磺酸盐、1,6-己二胺甲磺酸盐、二亚乙基三胺甲磺酸盐和吡啶甲磺酸盐分别能以良好的产率得到醇的四氢吡喃醚。这些催化剂,特别是三亚乙基二胺甲磺酸盐,能够在室温下短时间内催化反应顺利进行。该方法的主要优点是催化剂环境友好、高效且易于制备和处理。反应干净且无需溶剂,后处理非常简单。