摘要:
Novel processes, and intermediates, for making alkylated arylpiperazine and alkylated arylpiperidine compounds of the general formulas (I) and (VII), respectively wherein, R 1 and R 2 are individually selected from hydrogen, alkyl, substituted or aikyl; n = 0, 1, or 2; Y = NR 3 R 4 , QR 5 , or SR 5 , where R 3 and R 4 are individually selected from acyl or su!fonyl, and where R 5 is aryi or heteroaryi, or heterocyclic; and Ar is an aryl, heteroaryl, or heterocyclic compound.
摘要翻译:分别制备通式(I)和(VII)的烷基化芳基哌嗪和烷基化芳基哌啶化合物的新方法和中间体,其中R 1和R 2分别选自氢,烷基,取代或芳基; n = 0,1或2; Y = NR3R4,QR5或SR5,其中R3和R4分别选自酰基或磺酰基,其中R 5为芳或杂芳基或杂环; 且Ar为芳基,杂芳基或杂环化合物。
摘要:
A compound having formula (I), wherein R 1 and R 2 independently represent hydrogen or C 1 -C 4 alkyl groups, and G represents hydrogen or at least one substituent selected from the group consisting of Ci-Ci8 alkyl and C 1 -C 18 alkoxy; provided that when R 1 and R 2 represent hydrogen, G does not represent hydrogen, 4-methyl, 4-methoxy, 3-methoxy, 2,6-dipropargyl, 4-vinyl, 4-ethynyl or 3-ethynyl.
摘要:
The invention relates to a method for producing 2-alkyl polyisobutenylphenols and their Mannich adducts, to compositions that are obtained according to said method and to the use of said compositions.
摘要:
A novel process for the preparation of resveratrol and piceatannol and esters thereof involving a Heck type reaction is disclosed. Also disclosed are novel intermediates in that process.
摘要:
The invention relates to a method for producing and purifying tetrabutyl ammonium phenolate diphenol adduct by reacting an alkali phenolate with tetrabutyl ammonium salts in an aqueous phase and subsequently precipitating the adduct by adding phenol.
摘要:
The instant invention concerns polymers obtained by radical copolymerization of a mixture of (1) acrylic acid; (2) methacrylic acid; and (3) at least one allylcatechol selected from 4-allylbenzene-1,2-diol, 3-allyl benzene-1,2-diol and mixtures thereof. The polymers are especially useful for treating a metallic surface intended to be coated by a paint, a varnish or an adhesive. The invention also concerns methods of coatings making use of this polymer P, compositions comprising the polymer P and useful for these methods, and the obtained coated materials.
摘要:
The invention relates to a process for producing 5-nonyl salicylaldoxime that comprises of converting nonyl phenol to a 5-nonyl aldehyde in a two-step reaction using a novel catalyst mixture, followed by the oximation of the said aldehyde using hydroxylamine sulphate, and that the said catalytic process of aldehyde production is the main invention, in that the effective use of the catalyst mixture helps the reaction proceed at a faster and controlled rate which leads to a higher yield of aldehyde, as a result of complete conversion of all the reactants to the final products.
摘要:
The invention concerns a method for obtaining extracts based on polyphenol compounds contained in cocoa, characterised in that it consists in: using fresh beans, which have not been pre-treated or defatted, said fresh beans whereof their pulp and shell have been eliminated, so as to obtain clean almonds; grinding said almonds, in the presence of solvent(s); macerating the ground almonds in conditions enabling extraction of the desired compounds; filtering the macerated mixture; recuperating an extract containing said compounds from the filtrate. The invention also concerns the extracts and their uses for cosmetic, food and therapeutic purposes.
摘要:
A bioengineered synthesis scheme for the production of quinic acid from a carbon source is provided. Methods of producing quinic acid from a carbon source based on the synthesis scheme as well as conversion of quinic acid to hydroquinone are also provided.
摘要:
Preparation of dihydroxy- alpha -alkylstilbenes with reduced undesirable byproducts can be achieved by carrying out dehydrohalogenation of a substantially uniform dispersion of a halogenated intermediate of the desired product in the presence of water and a polar protic solvent.