摘要:
The present invention relates to process for the maintaining of a ratio stereoisomers of carotenoid compounds by using of at least one alkali hydroxide and/or earth alkali hydroxide, to specific formulations and to the use of such specific formulations.
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 relates to the dimerization of conjugated diene compounds by a catalytic process in a solvent medium comprising hydrocarbons, in the presence of a specific additive of the phenol type.
摘要:
A method for increasing the rate of phosphine oxide reduction, preferably during a Wittig reaction comprising use of an acid additive is provided. A room temperature catalytic Wittig reaction (CWR) the rate of reduction of the phosphine oxide is increased due to the addition of the acid additive is described. Furthermore, the extension of the CWR to semi-stabilized and non-stabilized ylides has been accomplished by utilization of a masked base and/or ylide-tuning.
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 provides a process for the preparation of lycopene containing oleoresin and lycopene crystals for human consumption. The present invention provides an efficient process for the preparation of lycopene crystals from lycopene containing oleoresin with at least 85% by weight lycopene, containing at least 90% by weight trans-lycopene and trace amounts of cis-lycopene and other carotenoids. The production of commercial grade lycopene crystals with high content of trans- lycopene makes it ideal and suitable for human consumption, use as an anti-oxidant, for applications in prevention of cancer and macular degenerative diseases, as an anti-oxidant, and as a food/feed colorant. The process is simple, convenient, economical and commercially feasible.
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:
A method for synthesizing intermediates for use in the synthesis of carotenoid synthetic intermediates, carotenoid analogs, and/or carotenoid derivatives. The carotenoid analog, derivative, or intermediate may be administered to a subject for the inhibition and/or amelioration of any disease that involves production of reactive oxygen species, reactive nitrogen species, radicals and/or non-radicals. In some embodiments, the invention may include methods for synthesizing chemical compounds including an analog or derivative of a carotenoid. Carotenoid analogs or derivatives may include acyclic end groups. In some embodiments, a carotenoid analog or derivative may include at least one substituent. The substituent may enhance the solubility of the carotenoid analog or derivative such that the carotenoid analog or derivative at least partially dissolves in water.