PROCESS FOR PREPARING TRANSSDECALIN DERIVATIVES

Japanese Patent JPS51127059

A

A process for the preparation of trans-decahydronaphthalene compounds of Formula I I wherein X is lower alkyl, -(CH2)3-Z-R2, -(CH2)3COOR4, or -(CH2)3CN; Y and Z are ketalized carbonyl or free, esterified, or etherified hydroxymethylene; U is halogen; R1, R2, and R3 are lower alkyl; and R4 is alkyl; WHEREIN AN OCTAHYDRONAPHTHALENE COMPOUND OF Formula II II is converted, in the presence of bases, by reaction of a trialkyl chlorosilane of the formula (R5)3Si-Cl WHEREIN THE R5 each are lower alkyl group, to a hexahydronaphthalene compound of the formula The hexahydronaphthalene compound is hydrogenated, in an inert solvent with hydrogen in the presence of a platinum-, palladium-, or rhodium-containing hydrogenation catalyst, to an octahydronaphthalene compound of the formula and a vinyl ketone of the formula XCOCH=CH2 is added to the thus-obtained octahydronaphthalene compound in an inert solvent in the presence of a Lewis acid.

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JP3850983	METHOD FOR IMPARTING, IMPROVING, INTENSIFYING OR MODIFYING PERFUMING CHARACTERISTICS OF PERFUME COMPOSITION OR PERFUMED ARTICLE, AND PRODUCTION OF NOVEL BICYCLIC COMPOUND, PERFUME COMPOSITION, PERFUMED ARTICLE AND NOVEL COMPOUND
JP2003534113	[Title of Invention] Biphasic Reaction Vessel and Usage

GERUHARUTO ZAUERU
URURITSUHI EEDERU
GUREGOORU HATSUFUERU
GIYUNTAA NEEFU
RUUDORUFU BIIHERUTO

JP4177676A

November 05, 1976

April 13, 1976

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SCHERING AG

C07C69/013; C07C45/00; C07C49/385; C07C49/517; C07C49/753; C07C67/00; C07C69/66; C07C253/00; C07C255/31; C07D317/50; C07D317/72; C07D321/00; C07F7/18; (IPC1-7): C07C49/43; C07C49/61; C07C69/95; C07C121/46; C07D317/72; C07D321/00

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