A simple and highly efficient method has been developed for the tetrahydropyranylation of alcohols by their reaction with 3,4-dihydro-2H-pyran (DHP) using a catalytic amount (0.01–1 mol%) of aluminium triflate under solvent-free conditions. The effect of various factors like temperature, amount of the catalyst, and molar ratio of substrates on the reaction conditions has also been studied. The comparative study of tetrahydropyranylation of benzyl alcohol using various catalysts including some reported ones shows the efficiency of this catalyst.Key words: tetrahydropyranylation, aluminium triflate, alcohols, catalysis.
在无溶剂条件下,使用催化剂量(0.01-1 摩尔%)的三酸铝,通过醇与 3,4-二氢-2H-吡喃(DHP)的反应,开发出了一种简单而高效的四氢吡喃化方法。此外,还研究了温度、催化剂用量和底物摩尔比等各种因素对反应条件的影响。使用各种催化剂(包括一些已报道的催化剂)对苯甲醇进行四氢吡喃化反应的对比研究表明了该催化剂的高效性。