摘要:
A process for the selective partial hydrogenation of conjugated diene compounds includes at least one, preferably terminal, diene function and at least one additional carbon-carbon double bond, the process including reacting the conjugated diene compounds with hydrogen in the presence of a nickel-NHC based catalyst. The disclosure also relates to a reaction mixture that can be obtained at the end of the process and to a catalyst that can be used in the process. The disclosure also relates to the use of the reaction mixture.
摘要:
The invention provides a method of alkene metathesis comprising contacting at least a first alkene, which is cardanol and/or anacardic acid, with an alkylidene ruthenium alkene metathesis catalyst comprising two ligands P 1 and P 2 , which may be the same or different and of formula P(R 1 ) 3 , in which P is a phosphorus atom coordinated to the ruthenium ion and each R 1 is independently an optionally substituted alkyl or alkoxy group; or two R 1 groups within one P 1 or P 2 ligand constitute an optionally substituted bicycloalkyl.
摘要:
The present invention relates to process for the maintaining of a ratio stereoisomers of carotenoid compounds, to specific formulations and to the use of such specific formulations.
摘要:
An improved method for preparing squalene from a squalene-containing composition, said method comprising the steps of (a) a purification distillation carried out at a temperature T 1 ; (b) a denaturing distillation carried out at a temperature T 2; wherein steps (a) and (b) may be performed in either order; T 1 and T 2 are sufficient to cause squalene to boil; T 2 > T 1 ; and T 2 > 200°C.
摘要翻译:一种从含角鲨烯组合物制备角鲨烯的改进方法,所述方法包括以下步骤:(a)在温度T 1下进行的纯化蒸馏; (b)在温度T 2下进行的变性蒸馏; 其中步骤(a)和(b)可以以任何顺序进行; T 1和T 2足以引起角鲨烯沸腾; T 2> T 1; T 2> 200℃。
摘要:
1,4,6,10-tetra-double bond pentadec-carbon phosphonate of formula (4), and preparation method thereof are provided. The preparation method comprises: reacting a pseudo ionone of formula (2) with sulfonium salt to prepare a epoxide of formula (9), and then reacting the epoxide of formula (9) with magnesium bromide to prepare a C-14 aldehyde of formula (3); condensing the C-14 aldehyde of formula (3) with tetra-alkyl methylene diphosphonate to obtain 1,4,6,10-tetra-double bond pentadec-carbon phosphonate of formula (4). Furthermore, the preparation method of lycopene via 1, 4, 6, 10-tetra-double bond pentadec-carbon phosphonate of formula (4) is also provided. The present method has the advantages of short route, easily obtained raw materials, and low cost.
摘要:
Farnesene dimers and/or farnesane dimers and compositions thereof are described. The compositions provided comprise conventional additives. Methods of making and using the compounds and composition are also disclosed.