onocyclic (C07C47/11)

ethod for producing 1-adamantyl acetaldehyde // 2612956
FIELD: chemistry.SUBSTANCE: present invention relates to the method of producing 1-adamantyl-acetaldehyde, used as a valuable intermediate product for synthesis of bioactive substances and functional organic materials. The method comprises a catalytic reaction between 1-adamantanol and vinyl acetate as an unsaturated compound. Vinyl acetate, 2.5-fold molar excess relative to 1-adamantanol; the reaction is caried out for 2 hours in dichloroethane at dichloroethane boiling point, indium tribromide is used as a catalyst, 5 mole %.EFFECT: target product produced using a simple process and readily available raw materials.2 tbl, 1 ex

Novel aldehydes and nitriles, obtained from isophorone, and application thereof in perfumery // 2535784
FIELD: chemistry.SUBSTANCE: invention relates to novel compounds of formula (I), which can be applied as an aromatic compound or a smell-masking agent. In formula (I) R stands for a hydrogen atom, C1-C6 alkyl, C2-C6 alkenyl or =CH2; Z stands for CN or CHO; and there is not more than one dashed bond. The following conditions must be observed: if Z stands for CHO and there is one of the dashed bonds, R does not stand for a hydrogen atom, and if there is a dashed bond between carbons Ca and Cb, R does not stand for a group = CH2. The invention also relates to a method of obtaining a formula (I) compound, its application as the aromatic compound or the smell-masking agent, and a perfumery composition.EFFECT: increased activity of the composition application.10 cl, 1 tbl, 10 ex

Use of campholene derivatives as aromatic ingredients in perfumery and manufacturing // 2458048
FIELD: chemistry.SUBSTANCE: invention relates to campholene derivatives of general formula (I), a fragrant or aromatic flavouring composition and use thereof in perfumery to obtain perfumed bases and concentrates, as aromatic agents for producing flavouring compositions or products, as agents which mask smell and/or taste, including in a combination with other perfumery or aromatic ingredients, solvents and additives. In general formula (I) , R1, R2, R3, R4 and R5 each independently denote a hydrogen atom or a linear or branched C1-C5 alkyl or C2-C5 alkenyl group, - Y denotes CN, C(O)R6 or a CR6(ORα)(ORβ) group, where R6 denotes a hydrogen atom or a linear or branched C1-C5 alkyl or C2-C5 alkenyl group, and Rα and Rβ simultaneously denote a linear or branched C1, C2, C3, C4 or C5 alkyl or C2, C3, C4 or C5 alkenyl group, the - 5-member ring is saturated or contains a double bond between C3' and C4' in formula (I), and the side chain, if necessary, contains a double bond between C1 and C2 and/or between C3 and C4, under the condition that said derivative is not 3-methyl-6-(2,2,3-trimethyl-cyclopent-3-enyl)-hex-4-enal.EFFECT: use of campholene derivatives to obtain perfumed bases and concentrates.10 cl, 1 tbl, 2 dwg, 20 ex

The method of obtaining alpha-adamantylidene aldehydes // 2240303
The invention relates to the chemistry of adamantane derivatives, and in particular to a new method of obtaining-adamantylidene aldehydes of General formulawhere R1=H, R2=CH3WITH3H7WITH4H9; R1=R2=CH3,which are intermediates for the synthesis of biologically active substances, using the adamantane derivative
 
2550865.
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