Abstract: Described herein are valuable new chemical intermediates for producing perfuming ingredients, and a process for producing compound of formula (I).

Abstract: Described herein are catalytic hydrogenation processes, using Ru complexes with tetradentate ligands of formula L in hydrogenation processes for the reduction of ketone, aldehyde, ester, or lactone into the corresponding alcohol or diol respectively. These processes use a ruthenium complex of formula (1) as defined herein.

Abstract: The present invention relates to the field of perfumery. More particularly, it concerns valuable new chemical intermediates for producing perfuming ingredients. Moreover, the present invention comprises also a process for producing compound of formula (I).

Abstract: The present invention relates to the field of organic synthesis and more specifically it concerns a process for preparing compound of formula (I) catalyzed by a nickel complex. The compound of formula (II) is also part of the invention.

Abstract: Described herein are valuable new chemical intermediates for producing perfuming ingredients, and a process for producing compound of formula (I).

Abstract: Described herein are catalytic hydrogenation processes, using Ru complexes with tetradentate ligands of formula L in hydrogenation processes for the reduction of ketone, aldehyde, ester, or lactone into the corresponding alcohol or diol respectively. These processes use a ruthenium complex of formula (1) as defined herein.

Abstract: The present invention relates to the field of chemical processes and, more particularly, it concerns valuable new chemical intermediates of formula (IV) for producing perfuming ingredients.

Abstract: The present invention relates to the field of chemical processes and, more particularly, it concerns valuable new chemical intermediates of formula (IV) for producing perfuming ingredients.

Abstract: The present invention relates to processes for the reduction by hydrogenation, using molecular H2, of a C5-C20 substrate containing one or two aldehydes functional groups into the corresponding alcohols or diol, characterized in that said process is carried out in the presence of —at least one catalyst or pre-catalyst in the form of a ruthenium complex having a coordination sphere of the N1P3O2, wherein the coordinating atom N and one coordinating atom P are provided by a first bidentate ligand, and the two other coordinating atoms P2 are provided by a second bidentate ligand and the coordinating atoms O2 are provided by two non-linear carboxylate ligands; and —optionally of an acidic additive.

Abstract: The present invention relates to processes for the reduction by hydrogenation, using molecular H2, of a C5-C20 substrate containing one or two aldehydes functional groups into the corresponding alcohols or diol, characterized in that said process is carried out in the presence of—at least one catalyst or pre-catalyst in the form of a ruthenium complex having a coordination sphere of the N1P3O2, wherein the coordinating atom N and one coordinating atom P are provided by a first bidentate ligand, and the two other coordinating atoms P2 are provided by a second bidentate ligand and the coordinating atoms O2 are provided by two non-linear carboxylate ligands; and—optionally of an acidic additive.

Abstract: The present invention relates to processes for the reduction by hydrogenation, using molecular H2, of a C5-C20 substrate containing one or two aldehydes functional groups into the corresponding alcohol or diol, characterized in that said process is carried out in the presence of —at least one catalyst or pre-catalyst in the form of a ruthenium complex having a coordination sphere of the N2P2O2, wherein the coordinating atoms N2 are provided by a first bidentate ligand, the coordinating atoms P2 are provided by a second bidentate ligand and the coordinating atoms O2 are provided by two non-linear carboxylate ligands; and—optionally of an acidic additive.

Abstract: The present invention relates to processes for the reduction by hydrogenation, using molecular H2, of a C5-C20 substrate containing one or two aldehydes functional groups into the corresponding alcohol or diol, characterized in that said process is carried out in the presence of —at least one catalyst or pre-catalyst in the form of a ruthenium complex having a coordination sphere of the N2P2O2, wherein the coordinating atoms N2 are provided by a first bidentate ligand, the coordinating atoms P2 are provided by a second bidentate ligand and the coordinating atoms O2 are provided by two non-linear carboxylate ligands; and —optionally of an acidic additive.

Abstract: The present invention relates to the field of catalytic hydrogenation and, more particularly, to the use of Ru complexes with bidentate ligands, having one amino or imino coordinating group and one phosphino coordinating group, in hydrogenation processes for the reduction of esters or lactones into the corresponding alcohol or diol respectively.

Abstract: The present invention relates to the field of catalysis and, more particularly, to a ruthenium carbonate complex of formula [Ru(diene)(C03)] or [Ru(diene)(C03)2]Mn, wherein M is an alkaline (n is 2) or alkaline earth (n is 1) cation. The invention relates also to the use of said ruthenium carbonate complex as precursors for a number of Ru carboxylate complexes. Said specific ruthenium complexes possess a number of important advantages over the similar prior art known precursors.

Abstract: The present invention relates to the field of one step process for the preparation of monomeric or dimeric [Ru(diene)(OOCR)2]n complexes from [(diene)RuCl2]n, as well as a new class of [Ru(diene)(OOCR)2]n complexes and their use to prepare [Ru(PP)(OOCR)2] complexes, which are good catalysts.

Abstract: The present invention relates to the field of catalysis and, more particularly, to a ruthenium carbonate complex of formula [Ru(diene)(C03)] or [Ru(diene)(C03)2]Mn, wherein M is an alkaline (n is 2) or alkaline earth (n is 1) cation. The invention relates also to the use of said ruthenium carbonate complex as precursors for a number of Ru carboxylate complexes. Said specific ruthenium complexes possess a number of important advantages over the similar prior art known precursors.

Abstract: The present invention relates to the field of one step process for the preparation of monomeric or dimeric [Ru(di-ene) (OOCR)2]n complexes from [(diene)Ru Cl2]n, as well as a new class of [Ru(diene)(OOCR)2]mn complexes and their use to prepare [Ru(PP)(OOCR)2] complexes, which are good catalysts.

Abstract: Acetal derivatives of 2,2,3,6-tetramethyl-1-cyclohexane/ene-carbaldehyde of formula (I): for use in the perfumery industry as well as the resulting compositions or articles containing one or more of these compounds. In formula (I), one dotted line indicates the presence of a carbon-carbon single or double bond and the other dotted line indicates the presence of a carbon-carbon single bond, R1 represents a hydrogen atom or a methyl or ethyl group; and each R, taken alone, simultaneously or independently, represents a C1-3 alkyl or alkenyl group, or the R groups, taken together, represent a C2-6 hydrocarbon group optionally including an oxygen atom.

Abstract: The present invention relates to the field of catalytic hydrogenation and, more particularly, to the use of Ru complexes with tetradentate ligands having at least one amino or imino coordinating group and at least one phosphino coordinating group in hydrogenation processes for the reduction of esters or lactones into the corresponding alcohol or diol respectively.

Abstract: Acetal derivatives of 2,2,3,6-tetramethyl-1-cyclohexane/ene-carbaldehyde of formula (I): for use in the perfumery industry as well as the resulting compositions or articles containing one or more of these compounds. In formula (I), one dotted line indicates the presence of a carbon-carbon single or double bond and the other dotted line indicates the presence of a carbon-carbon single bond, R1 represents a hydrogen atom or a methyl or ethyl group; and each R, taken alone, simultaneously or independently, represents a C1-3 alkyl or alkenyl group, or the R groups, taken together, represent a C2-6 hydrocarbon group optionally including an oxygen atom.