摘要:
This invention is directed to compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 are each independently hydrogen or a methyl radical, with the proviso that only one of R.sub.1 and R.sub.2 is methyl radical, as well as to aromatic compositions containing said compounds and the use of such aromatic compositions to impart desired odors.
摘要:
This invention is directed to perfume compositions comprising 4,6-dioxa-5-.sub.C1-C8 -alkyl or .sub.C2-C8 -alkenyl-tricyclo[7.2.1.0.sup.2,8 ]dodec-10-enes, the use of said tricyclododecenes as an odorant, the synthesis of said tricyclododecenes, and novel tricyclododecenes.
摘要:
4(5)-acetyl-9,9-dimethyltricyclo-[4,4,0,1.sup.8,10 ]-undec-1-ene having the formula ##STR1## its synthesis, its use as a perfumery agent and as an olfactant component in perfumery compositions and as an odorant for technical products.
摘要:
4(5)-acetyl-9,9-dimethyltricyclo-[4,4,0,1.sup.8,10 ]-undec-1-ene having the formula ##STR1## its synthesis, its use as a perfumery agent and as an olfactant component in perfumery compositions and as an odorant for technical products.
摘要:
This invention is directed to terpene derivatives. More particularly, this invention relates to a mixture of isomers of the formula ##STR1## wherein R.sub.1 and R.sub.2, which are different from each other, are each methyl or isopropyl, the preparation thereof, and perfume compositions containing them.
摘要:
This invention relates to the preparation of 13-oxabicyclo[10.3.0]pentadecane. More specifically, this invention relates to a process for preparing 13-oxabicyclo[10.3.0]pentadecane which comprises the steps of:(a) reacting cyclododecanone with elemental bromine in an organic solvent to form .alpha.-bromocyclododecanone;(b) reacting .alpha.-bromocyclododecanone with malonic acid dialkyl ester and alkali metal alcoholate to form the ketodiester 2-(2-oxocyclododec-1-yl)-malonic acid dialkyl ester;(c) hydrolyzing and decarboxylating the ketodiester from step (b) to from the corresponding 2-oxocyclododec-1-yl-acetic acid in an aqueous alkaline solution;(d) purifying the product of step (c) by extraction with an organic solvent and obtaining 2-oxocyclododec-1-yl-acetic acid;(e) reacting the product of step (d) with a lower alcohol to form a corresponding ester;(f) reducing the product of step (e) with a complex metallic hydride to form 2-(2-hydroxyethyl)-cyclododecanol; and(g) heating the product of step (f) in the presence of an acid catalyst to form 13-oxabicyclo[10.3.0]pentadecane.
摘要:
The invention is directed to a perfumery composition consisting essentially of at least one substituted 2-(1-methylbutyl)-1,3-dioxane and customary constituents and to the use of such a perfumery composition to impart a pleasant odor to a product.
摘要:
This invention is directed to terpene derivatives. More particularly, this invention relates to a mixture of isomers of the formula ##STR1## wherein R.sub.1 and R.sub.2, which are different from each other, are each methyl or isopropyl, the preparation thereof, and perfume compositions containing them.
摘要:
A perfumery composition consisting essentially of from 1% to 50% by weight of a 2,4-dioxa-spiro(5,5)undec-8-en of the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are members selected from the group consisting of hydrogen and methyl, R.sub.4 is a member selected from the group consisting of hydrogen, alkyl having 1 to 4 carbon atoms, methoxy, ethoxy, vinyl and 1-propenyl, R.sub.5 is a member selected from the group consisting of hydrogen and alkyl having 1 to 4 carbon atoms, and R.sub.4 and R.sub.5 taken together are --(CH.sub.2).sub.n -- where n is an integer from 4 to 6, and the remainder, customary constituents of perfumery compositions. Some of the compounds are novel.
摘要:
The invention is directed to a perfumery composition consisting essentially of at least one alkyl-substituted 1,3-dioxolane and customary constituents and to the use of such a perfumery composition to impart a pleasant odor to a product.