The present invention relates to the novel use of (oxybis)dicyclohexane compounds as fragrance materials.

The invention discloses a process for hydrogenation (alkenes, carbonyl compounds and aromatics) and hydrodeoxygenation (methoxy phenols) of organic molecules using hydrous ruthenium oxide (HRO) and its supported form as a recyclable heterogeneous catalyst in aqueous medium with good yield of desired products (70-100%) under mild reaction conditions.

The invention discloses a process for hydrogenation (alkenes, carbonyl compounds and aromatics) and hydrodeoxygenation (methoxy phenols) of organic molecules using hydrous ruthenium oxide (HRO) and its supported form as a recyclable heterogeneous catalyst in aqueous medium with good yield of desired products (70-100%) under mild reaction conditions.

The present invention is a method for producing a cyclopentyl alkyl ether compound represented by formula (1): R.sup.1OR.sup.2 (wherein, R.sup.1 represents an alkyl group having 1 to 10 carbon atoms that may have a substituent or a cycloalkyl group having 3 to 8 carbon atoms that may have a substituent, and R.sup.2 represents a cyclopentyl group that may have a substituent), wherein a cyclopentene that may have a substituent is reacted with an alcohol compound represented by formula (2): R.sup.1OH (wherein R.sup.1 represents the same as described above) in the presence of an acidic zeolite having a silica/alumina ratio of 80 or higher. The present invention provides a method for producing a cyclopentyl alkyl ether compound, wherein a reaction can be carried out in a liquid phase, catalyst activity is less lowered over time (long catalyst life), and a desired cyclopentyl alkyl ether compound can be continuously produced with high reaction efficiency and long-term stability even when a large amount of raw material is fed.

The present invention is a method for producing a cyclopentyl alkyl ether compound represented by formula (1): R.sup.1OR.sup.2 (wherein, R.sup.1 represents an alkyl group having 1 to 10 carbon atoms that may have a substituent or a cycloalkyl group having 3 to 8 carbon atoms that may have a substituent, and R.sup.2 represents a cyclopentyl group that may have a substituent), wherein a cyclopentene that may have a substituent is reacted with an alcohol compound represented by formula (2): R.sup.1OH (wherein R.sup.1 represents the same as described above) in the presence of an acidic zeolite having a silica/alumina ratio of 80 or higher. The present invention provides a method for producing a cyclopentyl alkyl ether compound, wherein a reaction can be carried out in a liquid phase, catalyst activity is less lowered over time (long catalyst life), and a desired cyclopentyl alkyl ether compound can be continuously produced with high reaction efficiency and long-term stability even when a large amount of raw material is fed.

Disclosed are compositions for attracting insects (e.g., harmful or troublesome insects such as blood-sucking and biting insects, ticks and mites) to an object (e.g., insect trap) or area (e.g., field, orchard). Also disclosed are methods for attracting insects involving treating (or exposing) the object or area with a composition containing compounds described herein (e.g., a pro-fragrance compound selected from the group consisting of an acetal, a ketal, hemiacetal and mixtures thereof, wherein at least one of a parent aldehyde, ketone, or alcohol of the pro-fragrance acetal or ketal is a fragrance compound), and optionally a carrier or carrier material.

Disclosed are compositions for attracting insects (e.g., harmful or troublesome insects such as blood-sucking and biting insects, ticks and mites) to an object (e.g., insect trap) or area (e.g., field, orchard). Also disclosed are methods for attracting insects involving treating (or exposing) the object or area with a composition containing compounds described herein (e.g., a pro-fragrance compound selected from the group consisting of an acetal, a ketal, hemiacetal and mixtures thereof, wherein at least one of a parent aldehyde, ketone, or alcohol of the pro-fragrance acetal or ketal is a fragrance compound), and optionally a carrier or carrier material.

The present invention relates to the novel use of (oxybis)dicyclohexane compounds as fragrance materials.

The present invention relates to the novel use of (oxybis)dicyclohexane compounds as fragrance materials.

Provided is a liquid crystal compound satisfying at least one of physical properties such as high stability to heat, light or the like, a high clearing point, low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy and large dielectric anisotropy, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition.

A compound is represented by formula (1).

##STR00001##

In formula (1), for example, R.sup.1 is alkyl having 1 to 12 carbons; ring A.sup.1, ring A.sup.2 and ring A.sup.3 are independently

##STR00002##

in which, X.sup.1 and X.sup.2 are independently O or CH.sub.2; Y.sup.1 is fluorine, CF.sub.3 or OCF.sub.3; Z.sup.1 and Z.sup.3 are independently a single bond, CF.sub.2O or COO; Z.sup.2 is a single bond, CF.sub.2O or COO; L.sup.1 and L.sup.2 are independently hydrogen or halogen; a is 0, 1, 2 or 3; and n.sup.1 and n.sup.2 are independently 0, 1 or 2.