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Section: Fragrance

Fragrant Esters of 3-Cyclohexylbutanoic Acid

Thus, the acid is not too easily available, but remarkable fragrant properties of its esters raise the interest in its production. The first four stages of its synthesis have been described previously. Prin’s reaction of α-methylstyrene with formaldehyde yields 4-methyl-4-phenyl-1,3-dioxane.

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'Ester Dance Reaction' Yields Low-cost Aromatic Esters

Research from Waseda University in Japan describes a novel catalyst and reaction, the "ester dance reaction," that could make synthesizing aromatic compounds sustainably easier.

Esters

In a recent article, I discussed the fundamentals of Schiff bases. In this issue, I would like to discuss the basics of esters.

Preparation of Fragrant Allyl Esters

Preparing methyl-cyclohexyloxyacetate, allyl-cyclohexyloxyacetate, methyl-cyclohexylpropionate and allyl-cyclohexylpropionate.

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Pear Ester: Ethyl (E,Z)-2,4-decadienoate

The ester's uses in flavors include fruity red, fruity yellow, fruity tropical and other fruity applications. In fragrances, it uses encompass fruity compounds for alcoholic and cosmetic perfumes.

Syntheses and Odor Characteristic of Beta-Terpinyl Esters

Our method of snythesis of terpin-1,8 diesters and eliminating one mole of acid made it possible for the first time to produce beta-terpinyl esters with interesting odour properties. This represents a major expansion of the variety of perfumery synthetics produced from turpentine.

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Givaudan Perfume Releases Floral Captive Molecule Esterly

Givaudan Perfume has recently released its latest floral captive molecule, Esterly, which include apple and strawberry notes.

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Patent Pick: Carboxy Ester Ketals for Fragrance

Patent Picks are chosen by the editors from publicly available sources. Today's choice are carboxy ester ketals as fragrance compositions, among other uses.

Odor Properties of 1-(p-Alkyl)Phenylethanols and Their Esters

All the substances have, principally, similar odor characters, possessing fruity, flowery, woody, penetrant odor notes with minor rotten, moldy notes. Other characteristic notes were observed in some compounds. Odor thresholds show mostly medium values, suitable for application in perfumery products.

Quantitative Relationships Between Structure and the Fruity Odor of Esters

This article describes the evaluation of three QSAR approacbes (CoMFA, Hansch and Principal Component Analysis) which were used to investigate the correlation between chemical structure and the fruitiness of esters. It includes the first published study of the use of comparative molecular field analysis (CoMFA) in the formulation of a structure-odor relationship.

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A "Natural Solution" to Labeling: Blue Marble Biomaterials Launches Ester Line

In response to an evolving demand of natural products, Blue Marble Biomaterials launches its natural ester line of products.

Fragrant Esters of 3-Cyclohexyl-1-propanol and 3-Cyclohexyl-1-butanol

Preparation and fragrance properties of some esters of 3-cyclohexyl-1-propanol and 3-cyclohexyl-1-butanol are described in this study. The compounds reported in this study possess interesting fragrant properties and may enrich the assortment of synthetic fragrant compounds used in perfumev industry

Resin Acid in Tree Moss Extract

Lichens are symbiotic organisms of fungi and algae. The biological significance of lichens and their metabolites has been reviewed by Huneck, who even stated that “good perfumes require lichen extracts.”

Aleuritic Acid in Perfumery and Pheromones

The brief account given above indicates the vast potential which aleuritic acid holds in the synthesis of numerous useful organic compounds possessing olfactory properties. With a steady and substantial availability of threo aleuritic acid, its utility is expected to increase enormously.

The portfolio is designed to be used in a large panel of flavors and fragrances compositions for the production of authentic tastes and smells.

Afyren Launches Flavyren Portfolio of Carboxylic Acids

The portfolio is designed to be used in a large panel of flavors and fragrances compositions for the production of authentic tastes and smells.

iso-Valeric acid makes a subtle, but very useful, contribution to hazelnut flavors at 100 ppm.

iso-Valeric Acid in Dairy, Brown, Nut, Savory, Alcoholic Drink & Fruit Flavors

The profile of iso-valeric is very much stereotypical of the primary cheese odor, without any hint of the faint goaty character that starts to creep into the series of aliphatic acids from six carbon atoms upwards.

Perfume Materials: The Addition of Acetic Acid and Allylalcohol to Dicyclopentadiene

Chemistry and sensory evaluation

HESP—A New Essential Oil From the Acid Hydrolysate of Spent Sandal Heartwood

In the present study, the utilization of the spent (exhausted) sandalwood powder from steam distillation as a source of an acid hydrolysate oil is examined. It has been found that hydrolysis of the non-volatile portion of an acetone extract of the spent sandalwood powder with methanolic hydrochloric acid followed by steam distillation gave rise to a new essential oil (1.2% yield) which we have called HESP, the acronym for hydrolyzed exhausted sandalwood powder.

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