Abstract: The present invention relates to the functionalisation of specific 1,3-alpha-dienes (by hydroboration). These functionalized 1,3-alpha-dienes are important intermediates in organic synthesis (especially in the synthesis of carotenoids, vitamin A and/or vitamin A derivatives).

Abstract: The present invention relates to specific transition metal catalysts and their use in chemical reactions.

Abstract: The present invention relates to a metal powder catalyst and its use in the selective catalytic hydrogenation of organic starting materials comprising a carbon-carbon triple bond. The powder catalyst comprises a metal alloy carrier, wherein the metal alloy comprises (i) 55 weight-% (wt-%)-80 wt-%, based on the total weight of the metal alloy, of Co, and (ii) 20 wt-%-40 wt-%, based on the total weight of the metal alloy, of Cr, and (iii) 2 wt-%-10 wt-%, based on the total weight of the metal alloy, of Mo, and wherein the said metal alloy is coated by a metal oxide layer and impregnated with Pd, and is characterized in that the metal oxide layer comprises CeO2.

Abstract: The present invention relates to a process of hydrogenating an alkynol selectively to an alkenol by hydrogen using a hydrogenation catalyst which is palladium supported on a carrier in the presence of an additive which is an organic phosphorus compound bearing either a phosphine or a phosphine oxide group and with the proviso that if the additive bears a phosphino group that the additive bears two or more phosphino groups.

Abstract: The present invention relates to new specific enol esters of formula (I) as well as to a process for their production by acylation of the corresponding dihydroretinal analogue. In formula (I) R is —COR? where R? is a C1-C16 alkyl group.

Abstract: The application relates to a process for the preparation of a compound of formula (II) by cyclisation of a polyene of formula (I), and to an intermediate of formula (III). The obtained compounds are useful intermediates in the preparation of specific isoprenoids, preferably in the production of vitamin A and derivatives of vitamin A.

Abstract: The present invention relates to a new process for the production of retinal or hydrogenated form of retinal.

Abstract: The present invention relates to new specific enol esters of formula (I) as well as to a process for their production. In formula (I) R is COR? where R? is a C1-C16 alkyl group.

Abstract: The present invention relates to a new dehydrogenation process of specific compounds.

Abstract: Processes for synthesizing new compounds that may usefully be employed in organic synthesis, especially in the synthesis of vitamin A or ?-carotene and derivatives thereof, e.g. canthaxanthin, astaxanthin or zeaxanthin are disclosed. The new compounds are especially useful as intermediates (building blocks) in the synthesis of vitamin A or ?-carotene, preferably vitamin A.

Abstract: The present invention relates to an improved process to produce a specific and very efficient epoxidation-catalyst (1,2:4,5-Di-O-isopropylidene-?-D-erythro-2,3-hexodiulo-2,6-pyranose).

Abstract: The present invention is related to a new metal powder catalytic system (catalyst), its production and its use in hydrogenation processes.

Abstract: The present invention relates to a process for the production of ?-springene of formula (I) wherein a compound of formula (II) is heated in the presence of a catalyst.

Abstract: The present invention relates to a catalytic process for the ethynylation of specific polyunsaturated aldehydes and ketones.

Abstract: The present invention relates to the catalytic ethynlation of ??-unsaturated ketones for producing tertiary acetylenic alcohols.

Abstract: The present invention relates to novel compounds which are particularly useful for the synthesis of novel chromanol derivatives. These compounds have interesting properties. Particularly, the novel chromanol derivatives have interesting antioxidant properties as well as flavours and fragrances.

Abstract: The present invention relates to a device for treatment of material transported through the device having a specific design.

Abstract: The present invention relates to novel process for the production of ketoisophorone via biocatalytic conversion of isophorone, in particular a one-pot biocatalytic system for conversion of ?-isophorone in a two-step oxidation process, with a first oxidation being catalyzed by a heme containing oxidoreductase such as a cytochrome P450 monooxygenase followed by another oxidation which can be either a chemical reaction or a biocatalytic reaction, in particular wherein the oxidation is catalyzed by an NAD(P) or NADP(H)-dependent oxidoreductase. The invention further provides polypeptides and nucleic acid sequences coding for cytochrome P450 monooxygenase with modified (higher) substrate selectivity, total turnover numbers and/or (re)activity compared to the wild-type enzyme. Ketoisophorone is useful as building block in the synthesis of vitamins and carotenoids.

Abstract: The present invention relates to a selective reduction of specific aldehydes and ketones to their corresponding alcohols.

Abstract: The present invention provides a new process for the preparation of a substituted imidazothiazolone compound. The process of the present invention uses a fluoride-free Lewis acid which is cheap and friendly to environment, and provides high selectivity and yield.