Abstract: The compounds of formulaX--CH.sub.2 --CH(OH)--CH.sub.2 --R (I)wherein symbol R represents a C.sub.1 -C.sub.3 alkyl radical and X a substituted cyclohexyloxy group of formula ##STR1## wherein index n stands for zero or one, the dashed lines indicate a single bond (n=1) or a double bond in position 2 (n=0) or 3 (n=1) and each of symbols R.sup.1 to R.sup.6 designates a hydrogen atom or a methyl radical, are new and can be conveniently utilized as perfuming and flavoring ingredients. They develop in particular woody-ambery notes.

Abstract: Polyunsaturated ketones of formula ##STR1## having a double bond in position 2' or 3' of the side chain and possessing either an isolated double bond in position 1 or 2, or two conjugated double bonds in positions 1 and 3 of the ring, as indicated by the dotted lines, andwhereinindex n stands for integer 1 or 2, andeach of the symbols R.sup.1 to R.sup.7, identical or different, designates a hydrogen atom or a lower radical,are prepared by a process which makes use of tertiary diallyl carbinols as starting materials.

Abstract: There are disclosed compounds of formula ##STR1## having a single or a double bond in the position indicated by the dotted line and wherein:Z represents an ethylene, ethenyl or an ethynyl divalent radical;X represents a hydrogen atom or an acyl radical, derived from a linear or branched lower hydrocarbon of formula R--CO, wherein R designates a hydrogen atom or a lower alkyl group, andR.sup.1 and R.sup.2, identical or different, represent each a hydrogen atom or a linear or branched alkyl radical.Compounds (I) possess useful perfuming properties.

Abstract: Process for the preparation of muscone starting from pyranic derivatives by treatments thereof with hydrogen in an inert organic solvent and in the presence of a noble metal catalyst. Compounds of formula ##STR1## and process for its preparation via dehydrogenation and dehydration of corresponding diol. Process for the preparation of unsaturated macrocyclic ketones of formula ##STR2## wherein the dotted lines stand for a single or a double bondwhereinx=1 and y=2, orx=2 and y=1, starting from compound (Ia) via acidic treatment.

Abstract: Polyunsaturated ketones of formula ##STR1## having a double bond in position 2' or 3' of the side chain and possessing either an isolated double bond in position 1 or 2, or two conjugated double bonds in positions 1 and 3 of the ring, as indicated by the dotted lines, and whereinindex n stands for integer 1 or 2, andeach of the symbols R.sup.1 to R.sup.7, identical or different, designates a hydrogen atom or a lower alkyl radical,are prepared by a process which makes use of tertiary diallyl carbinols as starting materials.

Abstract: Useful perfumery ingredients delta- and epsilon-damascone are prepared by a process which consists in an anionic cleavage, in the presence of a strong base of a diallyl alcohol of formula ##STR1## wherein the dashed lines in position 3 or 4 of the ring designate a double bond, followed by an isomerization of the terminal double bond of the thus obtained product by means of an acidic isomerizing agent.

Abstract: .alpha.,.beta.-and .beta.,.gamma.-unsaturated ketones of formula ##STR1## possessing a double bond in one of the positions indicated by the dashed lines and wherein R and R.sup.1 have the meaning given above and index n stands for integer 1 or 2, are obtained by a process which consists in treating with a strong base in an inert organic solvent a diallyl carbinol of formula ##STR2## wherein symbol R represents a primary, secondary or tertiary alkyl radical, or a substituted or unsubstituted phenyl radical, and symbol R.sup.1 represents a hydrogen atom or an alkyl radical.

Abstract: Compounds of formula ##STR1## having a double bond in one of the positions indicated by the dotted lines and wherein R represents a hydrogen atom or a methyl radical are utilized as starting materials for the preparation of bicyclic unsaturated hydrocarbons of formula ##STR2## (R=H, CH.sub.3). Conversion of (II) to (I) occurs via thermal treatment in the presence of a metal catalyst.Disclosed is also a process for the preparation of (II).

Abstract: Hydroxy-ketones having formula ##STR1## possessing a double bond in one of the positions indicated by the dotted lines, are prepared starting from a diallyl carbinol of formula ##STR2## Hydroxy-ketones (Ia, b) are useful as intermediates for the preparation of rose oxide.

Abstract: Methyl 2,6,6-trimethyl-cyclohex-2-en-1-yl carboxylate is a useful perfuming ingredient, especially for the reproduction of fruity, floral and fresh odor notes.

Abstract: Kentones of the formula ##STR1## wherein each of the symbols R.sup.1, R.sup.2, and R.sup.3 identical or different, represent a hydrogen atom or a lower alkyl radical containing 1 to 3 carbon atoms are disclosed useful as perfuming agents and in the preparation of perfume products.

Abstract: Process for the preparation of muscone starting from pyranic derivatives by treatments thereof with hydrogen in an inert organic solvent and in the presence of a noble metal catalyst.Compound of formula ##STR1## and process for its preparation via dehydrogenation and dehydration of corresponding diol.Process for the preparation of unsaturated macrocyclic ketones of formula ##STR2## wherein the dotted lines stand for a single or a double bond wherein x=1 and y=2, orx=2 and y=1,starting from compound (Ia) via acidic treatment.