- HYDROGENATION OF DIENALS WITH RHODIUM COMPLEXES UNDER CARBON MONOXIDE FREE ATMOSPHERE
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The present invention relates to the field of catalytic hydrogenation and, more particularly, to a process for the reduction by hydrogenation, using molecular H2, of a C6-C20 conjugated dienal into the corresponding deconjugated enal, characterized in that said process is carried out in the presence of a catalytic system comprising at least a base and at least one complex in the form of a rhodium complex comprising a C34-C60 bidentate diphosphine ligand (L2) coordinating the rhodium.
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Paragraph 0110; 0111; 0112; 0113
(2014/01/08)
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- HYDROGENATION OF DIENALS WITH RHODIUM COMPLEXES UNDER CARBON MONOXIDE FREE ATMOSPHERE
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The present invention relates to the field of catalytic hydrogenation and, more particularly, to a process for the reduction by hydrogenation, using molecular H2, of a C6-C20 conjugated dienal into the corresponding deconjugated enal, characterized in that said process is carried out in the presence of a catalytic system comprising at least a base and at least one complex in the form of a rhodium complex comprising a C34-C60 bidentate diphosphine ligand (L2) coordinating the rhodium.
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Page/Page column 18-19
(2012/11/14)
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- PERFUMING INGREDIENTS OF THE FLORAL AND/OR ANIS TYPE
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The present invention concerns a compound of formula wherein R represents a hydrogen atom or a C1-2 alkyl or alkoxyl group; each R1, R2 or R3 represents a hydrogen atom or a methyl or ethyl group; and X represents a CHO, COOR4 or CN group, R4 being a methyl or ethyl group; and at least one of said R, R1 or R2 represents a group containing at least one carbon atom; and it use as perfuming ingredient, for instance to impart odor notes of the floral and/or anis type.
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