Abstract: In a novel process for the synthesis of cinnamic esters or substituted cinnamic esters, carboxylic esters are reacted, by condensation, with benzaldehyde or substituted benzaldehydes, respectively, in the presence of a solid with basic properties.

Abstract: Mint lactone can be prepared by hydrogenating hydroxymenthofurolactone to give the intermediate dihydrohydroxymenthofurolactone with the subsequent elimination of water.

Abstract: The present invention relates to a process for the preparation of cis-2-tertiary-butylcyclohexanol, where 2-tertiary-butylphenol is hydrogenated in the presence of a nickel/iron catalyst mixture and 2-tertiary-butylcyclohexyl acetate.

Abstract: An infinitely variable toroidal drive comprising a housing (1), an input shaft (3), a torque converter (34), two input discs (5, 15) with toroidal surfaces, two output discs (6, 16) with toroidal surfaces wherein one input disc and one output disc each form a pair and the two output discs are arranged next to each other with mirror symmetry, several friction wheels for transmitting a torque from the input disc to the corresponding output disc, an output shaft (10) and a gearwheel system (8, 9) between output discs and output shaft, there being removably fastened on the transmission housing (1) a holding frame (2) having: an upper portion (28), a lower portion (29), fastening devices (20, 30 and 46, 47) for fastening pivots (42, 43 and 48, 49) and a bearing support member (7) which connects the upper portion (28) with the lower portion (29) and in which is situated at least one bearing (24) for the gear wheel (8).

Abstract: Dihydrocoumarin is prepared by hydrogenating coumarin in the presence of a palladium catalyst.

Abstract: The invention relates to a process for the preparation of 15-pentadecanolide by hydrogenating 15-pentadecenolide and to its use.

Abstract: The present invention relates to a process for the preparation of alkylcarboxylic allyl esters by reacting allyl alcohol and alkylcarboxylic acids.

Abstract: In a novel process for the synthesis of cinnamic esters or substituted cinnamic esters, carboxylic esters are reacted, by condensation, with benzaldehyde or substituted benzaldehydes, respectively, in the presence of a solid with basic properties.

Abstract: The present invention relates to a method for stabilizing phenylacetaldehyde by adding at least one additive, in which case the additive contains one or more polybasic carboxylic acids.

Abstract: Benzylacetone can be prepared by hydrogenating benzylideneacetone in the presence of a palladium catalyst on activated carbon and/or a palladium catalyst on aluminum oxide.

Abstract: The present invention relates to a process for the preparation of cis-2-tertiary-butylcyclohexanol, where 2-tertiary-butylphenol is hydrogenated in the presence of a nickel/iron catalyst mixture and 2-tertiary-butylcyclohexyl acetate.

Abstract: The present invention relates to a process for the synthesis of cinnamic esters and/or cinnamic acids by condensation of aldehydes with carboxylic anhydrides, using iron(III) salts as catalyst.

Abstract: The present invention relates to a process for the preparation of 1-(2,2,6-trimethylcyclohexyl)-3-alkanols with a content of at least 15% of trans isomers, based on the total amount of the 1-(2,2,6-trimethylcyclohexyl)-3-alkanol, by catalytic hydrogenation, where a) 1-(2,6,6-trimethyl-1 or 2-cyclohexen-1-yl)-1-alken-3-ones are reacted in the presence of ruthenium-containing catalysts or catalyst mixtures, or b) 1 -(2,6,6-trimethyl-1 or 2-cyclohexen-1-yl)-1-alken-3-ols are reacted in the presence of catalysts which contain 1 or more elements of groups Ib, VIb and VIII of the Periodic Table of the Elements.

Abstract: Mint lactone can be prepared by hydrogenating hydroxymenthofurolactone to give the intermediate dihydrohydroxymenthofurolactone with the subsequent elimination of water.

Abstract: The toroidal drive has an input shaft (3) and a torque shaft (20) positioned coaxially thereto as well as two input discs (5, 12) and two output discs (6, 11) associated in pairs to the input discs. Between one of the input discs (5) and an axial flange (9), which is firmly connected with the input shaft (3) and upon which supports itself the input disc (5) is not pressurized by a contact-pressure device (4), one universal bearing (18) is provided which assumes both the axial support and the radial support of said input disc (5).

Abstract: Methyl cyclohexyl-propionate is prepared by the hydrogenation of methyl cinnamate in the presence of a ruthenium and/or palladium catalyst.

Abstract: Benzylacetone can be prepared by hydrogenating benzylideneacetone in the presence of a palladium catalyst on activated carbon and/or a palladium catalyst on aluminum oxide.

Abstract: Dihydrocoumarin is prepared by hydrogenating coumarin in the presence of a palladium catalyst.

Abstract: An infinitely variable toroidal drive comprising a housing (1), an input shaft (3), a torque converter (34), two input discs (5, 15) with toroidal inner surfaces, two output discs (6, 16) with toroidal inner surfaces, one input disc and one output disc each forming one pair and both output discs being disposed next to each other with mirror symmetry, several friction wheels for transmitting a torque from the input disc to the corresponding output disc, one output shaft (10) and one gear wheel system (8, 9) between output discs and output shaft wherein on the transmission housing (1) is removably fastened a holding frame (2) which has: one upper frame clamp (28), one lower frame clamp (29), one cup-shaped bearing support member (7) which connects the upper frame clamp with the lower frame clamp and upon which at least one gearing (24) for the gear wheel (8) is situated in a manner such that its inner ring is stationarily arranged and its out ring rotates together with the gear wheel (8).

Abstract: The invention relates to an infiflely variable toroidal drive comprising a housing 1, an input shaft 3, a torque shaft 34, two input discs 5, 15 with toroidal inner surfaces and two output discs 6, 16 with toroidal inner surfaces. One input disc and one output disc each form a pair and the two output discs are arranged next to each other and in mirror symmetry. The toroidal drive also comprises several friction wheels for transmitting a torque from the input disc to the corresponding output disc, an output shaft 10 and a gear wheel system 8, 9 between the output discs and the output shaft. A holding frame 2 is removably fastened to the drive housing 1,which frame consists of an upper frame clamp 28, a lower frame clamp 29 and a cup-shaped bearing support member 7. The lowerframe clamp 29 has a recess 45 and one end of the output shaft 10 is mounted via a bearing 32 in a rotating manner.