A process for preparing 4-hydroxymethyltetrahydropyran comprises reacting tetrahydrofurans of the general formula I ##STR1## where R.sup.1 is hydrogen, C.sub.1 - to C.sub.6 -alkyl or --CO--R.sup.2, and R.sup.2 is hydrogen or C.sub.1 - to C.sub.6 -alkyl, at from 0.degree. to 400.degree. C. and from 0.001 to 400 bar in the presence of acidic catalysts.
制备4-羟甲基
四氢吡喃的过程包括在存在酸性催化剂的条件下,在0到400摄氏度和0.001到400巴的条件下,反应通式I的
四氢呋喃,其中R1是氢,C1到C6烷基或--CO--R2,R2是氢或C1到C6烷基。