2,2-Disubstituted 5-methyl-2,5-dihydro- and 2,2-disubstituted 5-methyl-tetrahydrofurans of formula (I) wherein R
1
and R
2
have the same meaning as described in the specification are useful as odorants.
式(I)中R1和R2的含义如说明书所述的2,2-二取代的5-甲基-
2,5-二氢呋喃和2,2-二取代的5-甲基
四氢呋喃是有用的香气剂。