The present invention relates to substituted 4-methylene-tetrahydropyrans, 4-methyl- dihydropyrans and 4-methyl-tetrahydropyrans of formula (I), where the variables are as defined in the claims and description, to a stereoisomer thereof, to a mixture of stereoisomers thereof, to a mixture of different di- and tetrahydropyrans (I) and to a mixture containing at least one di- or tetrahydropyran (I) and at least one cyclic acetal which is a 1,3-dioxan carrying in 2-position an isobutanol-2-yl- (derived) substituent and in 4,4- or 5,5-position two methyl substituents. The invention also relates to the use of such compounds as an aroma chemical and/or for modifying and/or enhancing the aroma of a composition, to compositions comprising such compounds, to methods for preparing such compounds and to a product obtainable by these methods.
本发明涉及式(I)的取代4-亚甲基-
四氢吡喃、4-甲基-二氢
吡喃和4-甲基-
四氢吡喃,其中变量如权利要求和描述中所定义的那样,以及其立体异构体、其立体异构体的混合物、不同二氢
吡喃和
四氢吡喃(I)的混合物,以及至少含有一种二氢
吡喃(I)和至少含有一种环状
缩醛的混合物,该环状
缩醛是一种1,3-二氧杂环戊二烷,其2-位置携带
异丁醇-2-基(衍生)取代基,在4,4-或5,5-位置携带两个甲基取代基。该发明还涉及将这些化合物用作香气
化学品和/或用于修改和/或增强组合物的香气,包括这些化合物的组合物,制备这些化合物的方法以及通过这些方法得到的产品。