The present invention relates to a method for preparing 5-aryl pentanols from 2-aryl-4-hydroxytetrahydropyrans as starting materials.

The present invention relates to a method for preparing 5-aryl pentanols from 2-aryl-4-hydroxytetrahydropyrans as starting materials.

The present invention relates to a method for preparing 5-aryl pentanols from 2-aryl-4-hydroxytetrahydropyrans as starting materials.

The present invention relates to a method for preparing 5-aryl pentanols from 2-aryl-4-hydroxytetrahydropyrans as starting materials.

The present invention relates to a method for preparing 5-aryl pentanols from 2-aryl-4-hydroxytetrahydropyrans as starting materials.

The present invention relates to a method for preparing 5-aryl pentanols from 2-aryl-4-hydroxytetrahydropyrans as starting materials.

The present invention relates to a method for preparing a compound of formula (I). The present invention also relates to compounds of formula (A) or a compound in the form of a stereoisomer. The present invention further relates to the use of a compound of formula (A) as aroma chemical. ##STR00001##

The present invention relates to a method for preparing a compound of formula (I). The present invention also relates to compounds of formula (A) or a compound in the form of a stereoisomer. The present invention further relates to the use of a compound of formula (A) as aroma chemical. ##STR00001##

The present invention relates to a method for preparing a compound of formula (I). The present invention also relates to compounds of formula (A) or a compound in the form of a stereoisomer. The present invention further relates to the use of a compound of formula (A) as aroma chemical. ##STR00001##

The dehydration membrane reactor for methanol production from CO.sub.2 hydrogenation includes one or more porous supports, a dehydration membrane on the one or more porous supports, and a catalyst layer on the dehydration membrane. The one or more porous supports include hollow ceramic fibers and the dehydration membrane includes NaA zeolite. The reactor is made by dip-coating the porous supports in a zeolite crystal seed solution and drying the coated porous support. The coated porous support is dried at about 80° C. and then heated to a temperature above about 200° C. The NaA zeolite membrane is then grown on the seeded support, and a catalyst layer is applied to the zeolite membrane. A feedstream including carbon dioxide and hydrogen is fed to the catalyst layer, where a product stream including methanol and water is evolved. The water is then removed from the product stream through the dehydration membrane to produce a high-purity methanol product.