摘要:
A novel process for the manufacture of a cinnamic acid derivative of the formula ##STR1## wherein R.sup.1 signifies hydrogen or C.sub.1-8 -alkyl and R.sup.2 signifies hydrogen, C.sub.1-10 -alkyl, C.sub.1-10 -hydroxyalkyl or C.sub.1-4 -alkoxy-C.sub.1-10 -alkyl, is described in which a 4-R.sup.1 O-halobenzene is reacted with acrylic add or an acrylic acid ester CH.sub.2 .dbd.CHCOOR.sup.2 using a heterogeneous palladium catalyst in the presence of the alkanoic acid ammonium salt formed from a C.sub.2-5 -alkanoic acid and an aliphatic mono-, di- or trialkylamine or heterocyclic amine. In the case of the manufacture of the cinnamic acid derivative I in which R.sup.2 signifies hydrogen, the reaction can be carried out in the presence of the amine in place of the alkanoic acid ammonium salt. A further aspect of the described invention comprises reacting the 4-R.sup.1 O-iodobenzene with the product of the Michael addition of an acrylic acid ester CH.sub.2 .dbd.CHCOOR.sup.2', wherein R.sup.2' has the above significance of R.sup.2 except hydrogen, with an aliphatic or heterocyclic primary of secondary amine using a heterogeneous palladium catalyst and in the presence of a C.sub.2-5 -alkanoic add in order to manufacture the above cinnamic add derivatives with the exception of the substituted cinnamic acid itself.In view of their UV-B absorbing properties the thus-manufactured cinnamic acid derivatives are suitable as UV-B filters for cosmetic agents, e.g. sunscreen agents.
摘要:
The present invention provides compounds of formula I: ##STR1## wherein R.sup.1 is hydrogen or methyl and R.sup.2 is alkyl. These compounds are useful as fixatives in fragrance compositions. Processes of making such compounds are also provided.
摘要:
Photostable, cosmetic light-screening compositions for the protection of the human epidermis and the hairs against the ultraviolet rays of wavelengths between 320 and 400 nm, and between 320 and 400 nm respectively, comprising, in a cosmetically acceptable vehicle containing at least one fatty phase, about 0.75 to about 5%, in particular about 1 to about 4% by weight, of a dibenzoylmethane type UV-A screening agent and at least about 0.5% to about 2%, in particular about 0.5 to about 1% by weight, of a benzylidene type stabilizer of the general formula ##STR1## represents a bridged cyclic compound having the camphor (1,7,7-trimethyl-bicyclo�2.2.1!heptan-2-one), norcamphor (bicyclo�2.2.1!heptan-2-one), nopinone (6,6-dimethyl-bicyclo�3.1.1!heptan-2-one), pinocamphone (4,6,6-trimethyl-bicyclo�3.1.1!heptan-3-one), verbanone (4,6,6-trimethyl-bicyclo�3.1.1!heptan-2-one, thujone (1-isopropyl-4-methyl-bicyclo�3.1.0!hexan-3-one) or the 4,7-methano-octahydro-inden-5-one structure, and wherein R.sup.1, R.sup.2, R.sup.3 independently signify hydrogen, lower alkyl, lower alkoxy, or 2 adjacent radicals represent methylene-dioxy, and where, in case of the camphor derivatives, the ratio of the UV-A filter to the stabilizer is greater than ca. 1.5:1, preferably ca. 2 to ca. 6:1, and where 4-methylbenzylidene camphor is excluded from the scope of formula I, and, optionally, at least one conventional UV-B filter.
摘要:
The present invention provides compounds of formula I wherein R1 and R3 are independently H or C1-3 alkyl, and R2 is H, C1-3 alkyl, methylene or ethylidene, with the proviso that R1 and R2 are not simultaneously H; n is 0 or 1; and is a single or a double bond, wherein a maximum of two double bonds are present in the compound. Compounds of formula II are also provided: wherein A is selected from the group of CR4R5OH, CR4R5OC(O)R6, CO2R6, CN and C(O)R4; R1, R3, R4, and R5 are independently H or C1-3-alkyl; R2 is H, C1-3-alkyl, methylene, or ethylidene; R6 is H, C1-3 alkyl, C2-4 alkenyl, or alkinyl; n is 0 or 1; and is a single or a double bond, wherein a maximum of two double bonds are present. Compositions containing compounds of formulae I and II, as well as methods for imparting fragrance to substrates using such compounds are also provided.
摘要翻译:本发明提供式I化合物,其中R 1和R 3独立地为H或C 1-3烷基,R 2为H,C 1-3烷基,亚甲基或亚乙基,条件是R 1和R 2不同时为H; n为0或1 ; 和是单键或双键 其中在该化合物中存在最多两个双键。 还提供式II化合物:其中A选自CR 4 R 5 OH,CR 4 R 5 OC(O)R 6,CO 2 R 6,CN和C(O)R 4; R 1,R 3,R 4和R 5独立地为H或C 1-3 - 烷基 R 2为H,C 1-3烷基,亚甲基或亚乙基; R 6为H,C 1-3烷基,C 2-4烯基或炔基; n为0或1; 和是单键或双键 其中存在最多两个双键。 还提供了含有式I和II化合物的组合物,以及使用这些化合物赋予底物香料的方法。
摘要:
A process for the manufacture of p-tert-butyl-.alpha.-methylhydrocinnamaldehyde which comprises the catalytic rearrangement of p-tert-butylbenzyl propenyl ether is provided.
摘要:
A process for the preparation of β,γ-unsaturated-γ, γ-disubstituted esters 1 with high E/Z- and β,γ/α,β-ratios, Formula (1) by reacting at a temperature of between about 130 and 170 degrees centigrade the conjugated malonate Formula (3) with, a group I, II or III metal halide or an organic cation/halide anion pair, an inorganic proton source and a polar solvent.
摘要:
A process for the preparation of β,γ-unsaturated-γ,γ-disubstituted esters 1 with high E/Z- and β,γ/α,β-ratios, Formula (1) by reacting at a temperature of between about 130 and 170 degrees centigrade the conjugated malonate Formula (3) with, a group I, II or III metal halide or an organic cation/halide anion pair, an inorganic proton source and a polar solvent.
摘要:
The present invention provides compounds of formula I wherein R1 and R3 are independently H or C1-3 alkyl, and R2 is H, C1-3 alkyl, methylene or ethylidene, with the proviso that R1 and R2 are not simultaneously H; n is 0 or 1; and - - - is a single or a double bond, wherein a maximum of two double bonds are present in the compound. Compounds of formula II are also provided: wherein A is selected from the group of CR4R5OH, CR4R5OC(O)R6, CO2R6, CN and C(O)R4; R1, R3, R4, and R5 are independently H or C1-3-alkyl; R2 is H, C1-3-alkyl, methylene, or ethylidene; R6 is H, C1-3 alkyl, C2-4 alkenyl, or alkinyl; n is 0 or 1; and - - - is a single or a double bond, wherein a maximum of two double bonds are present. Compositions containing compounds of formulae I and II, as well as methods for imparting fragrance to substrates using such compounds are also provided.
摘要翻译:本发明提供式I化合物,其中R 1和R 3独立地为H或C 1-3烷基,R 2为H,C 1-3烷基,亚甲基或亚乙基,条件是R 1和R 2不同时为H; n为0或1 ; 和 - - 是单键或双键,其中在化合物中存在最多两个双键。 还提供式II化合物:其中A选自CR 4 R 5 OH,CR 4 R 5 OC(O)R 6,CO 2 R 6,CN和C(O)R 4; R 1,R 3,R 4和R 5独立地为H或C 1-3 - 烷基 R 2为H,C 1-3烷基,亚甲基或亚乙基; R 6为H,C 1-3烷基,C 2-4烯基或炔基; n为0或1; 和 - - 是单键或双键,其中存在最多两个双键。 还提供了含有式I和II化合物的组合物,以及使用这些化合物赋予底物香料的方法。
摘要:
The invention relates to agents preventing (the formation of) human malodor. In particular, the invention relates to the use of several classes of compounds which can act as such agents in cosmetic products, such as deodorants and antiperspirants. These compounds are normally odorless or nearly so, but upon contacting the skin as for example, in skin care compositions or in personal care compositions, they prevent malodor. The compounds under consideration are compounds of the formulaX--(Z).sub.n --CO--NH--CH--(COO--Y)--CH.sub.2 CH.sub.2 CONH.sub.2IThe definition of the substituents is given in the specification.
摘要:
The present invention provides compounds of formula I wherein R1 and R3 are independently H or C1-3 alkyl, and R2 is H, C1-3 alkyl, methylene or ethylidene, with the proviso that R1 and R2 are not simultaneously H; n is 0 or 1; and is a single or a double bond, wherein a maximum of two double bonds are present in the compound. Compounds of formula II are also provided: wherein A is selected from the group of CR4R5OH, CR4R5OC(O)R6, CO2R6, CN and C(O)R4; R1, R3, R4, and R5 are independently H or C1-3-allyl; R2 is H, C1-3-alkyl, methylene, or ethylidene; R6 is H, C1-3 alkyl, C2-4 alkenyl, or alkinyl; n is 0 or 1; and is a single or a double bond, wherein a maximum of two double bonds are present. Compositions containing compounds of formulae I and II, as well as methods for imparting fragrance to substrates using such compounds are also provided.
摘要翻译:本发明提供式I化合物,其中R 1和R 3独立地为H或C 1-3烷基,R 2为H,C 1-3烷基,亚甲基或亚乙基,条件是R 1和R 2不同时为H; n为0或1 ; 和是单键或双键 其中在该化合物中存在最多两个双键。 还提供式II化合物:其中A选自CR 4 R 5 OH,CR 4 R 5 OC(O)R 6,CO 2 R 6,CN和C(O)R 4; R 1,R 3,R 4和R 5独立地为H或C 1-3 - R 2为H,C 1-3烷基,亚甲基或亚乙基; R 6为H,C 1-3烷基,C 2-4烯基或炔基; n为0或1; 和是单键或双键 其中存在最多两个双键。 还提供了含有式I和II化合物的组合物,以及使用这些化合物赋予底物香料的方法。