231291-22-8Relevant articles and documents
A chromium picolinate food additive novel preparation method of
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Paragraph 0033-0035, (2019/10/23)
The invention discloses a novel preparation method of a chromium picolinate type food additive, and belongs to the technical field of synthesis of a food additive. The chromium picolinate type food additive adopts the following structure as shown in the description. The invention further discloses a preparation method of the chromium picolinate type food additive. The chromium picolinate type food additive is synthetized by a new method, the reaction process is simple and easy to operate, the raw materials are cheap and easy to obtain, the reaction efficiency is high, the repeatability is good, and the chromium picolinate type food additive has favorable growth effect on growing fattening pigs, and has low biological accumulation properties.
Synthetic method for 6-trifluoromethyl-nicotinic acid
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Paragraph 0050-0058, (2019/01/17)
The invention discloses a method for synthesizing 6-trifluoromethyl-nicotinic acid. The method comprises the specific steps: carrying out addition-elimination reaction reactions on trifluoroacetic acid and vinyl ethyl ether under the action of phosphorus pentachloride to obtain 4-ethoxyl-1,1,1-trifluoro-3-butene-2-one; carrying out addition-elimination reaction reactions on ethidene diamine and cyanoacetic acid in a heating condition to obtain 3-(diethyl amino) acrylonitrile first; carrying out an Stork alkylation reaction on 3-(diethyl amino) acrylonitrile and 4-ethoxyl-1,1,1-trifluoro-3-butene-2-one to obtain 2-((diethyl amino) methylene)-6,6,6-trifluoro-5-oxo-3-hexenenitrile; carrying out exocondensation on 2-((diethyl amino) methylene)-6,6,6-trifluoro-5-oxo-3-hexenenitrile under the action of ammonium acetate to obtain 6-trifluoromethyl cyanopyridine; and carrying out cyano hydrolysis reaction on the 6-trifluoromethyl cyanopyridine t obtain 6-trifluoromethyl-nicotinic acid. The synthetic method is more economic, environmentally friendly, efficient and simple.
Synthetic method of immunosuppressive medicine with oxazole ring
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, (2018/03/01)
The invention discloses a synthetic method of an immunosuppressive medicine with an oxazole ring and belongs to the technical field of medicine synthesis. The technical scheme has the key points that the immunosuppressive medicine with the oxazole ring has the following structure shown in the specification. The invention also discloses a preparation method of the immunosuppressive medicine with the oxazole ring. The synthetic method disclosed by the invention has the advantages that the immunosuppressive medicine is synthesized by a new method, the reaction process is simple and easy in operation, the materials are low in price and easy to obtain, the reaction efficiency is higher, the repeatability is better, and the Immunosuppressive-activity effect is obvious.
Preparation method and application of oxazoles compound with immunosuppressive activity
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Paragraph 0036-0038, (2017/11/16)
The invention discloses a preparation method and application of an oxazoles compound with immunosuppressive activity, and belongs to the technical field of medicine synthesis. The key point of the technical scheme is that the oxazoles compound with the immunosuppressive activity has the following structure as shown in the specification. The invention further discloses the preparation method of the oxazoles compound with the immunosuppressive activity. The oxazoles compound with the immunosuppressive activity is synthesized through a novel method; the reaction process is simple and feasible; raw materials are low in cost and readily available; the reaction efficiency and the repetitiveness are relatively high; and the immunosuppressive activity effect is obvious.
Efficient synthesis method of chromium picolinate food additive
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Paragraph 0031; 0032; 0033, (2017/12/06)
The invention discloses an efficient synthesis method of a chromium picolinate food additive and belongs to the technical field of food additive synthesis. The chromium picolinate food additive has he following structure shown in the specification. The invention further discloses a preparation method of the chromium picolinate food additive. The chromium picolinate food additive is synthesized with a novel method, the reaction process is simple to operate and easy to implement, raw materials are easy to obtain, and the method is higher in reaction efficiency and better in repeatability, plays a good role in promoting growth of growing-finishing pigs and has very low bioaccumulation.
Cyanophenyl derivative
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Page column 16, (2010/11/30)
This application relates to a piperazino-substituted novel cyanophenyl derivative in which a substituted carbamoyl or substituted sulfamoyl group having an aryl, heterocyclic or the like group that may have a substituent group is bonded to one nitrogen atom on the piperazine ring. The compound of this application has an anti-androgen action and is useful in preventing or treating prostatic cancer, benign prostatic hyperplasia and the like diseases.
Recommendable routes to trifluoromethyl-substituted pyridine- and quinolinecarboxylic acids
Cottet, Fabrice,Marull, Marc,Lefebvre, Olivier,Schlosser, Manfred
, p. 1559 - 1568 (2007/10/03)
As part of a case study, rational strategies for the preparation of all ten 2-, 3-, or 4-pyridinecarboxylic acids and all nine 2-, 3-, 4-, or 8-quinolinecarboxylic acids bearing trifluoromethyl substituents at the 2-, 3-, or 4-position were elaborated. The trifluoromethyl group, if not already present in the precursor, was introduced either by the deoxygenative fluorination of suitable carboxylic acids with sulfur tetrafluoride or by the displacement of ring-bound bromine or iodine by trifluoromethylcopper generated in situ. The carboxy function was produced by treatment of organolithium or organomagnesium intermediates, products of halogen/metal or hydrogen/ metal permutation, with carbon dioxide. ( Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003).
The direct metalation and subsequent functionalization of trifluoromethyl-substituted pyridines and quinolines
Schlosser, Manfred,Marull, Marc
, p. 1569 - 1575 (2007/10/03)
Depending on the choice of the reagent, 2-(trifluoromethyl)-pyridine can be selectively metalated and subsequently carboxylated of otherwise functionalized either at the 3- or at the 6-position. "Optional site selectivity" can also be achieved with 4-(trifluoromethyl)pyridine, which may be deprotonated either at the 2- or at the 3-position. In contrast, 3-(trifluoromethyl)pyridine undergoes nucleophilic addition and ensuing decomposition whatever the base. Depending on the reaction conditions, 2-(trifluoromethyl)quinoline displays reactivity toward lithium reagents at its 3-, 4-, or 8-positions, 3-(trifluoromethyl)quinolines at the 2- or 4-positions, and 4-(trifluoromethyl)quinoline at the 2- or 3-positions. It was therefore possible to prepare four trifluoromethyl-substituted pyridinecarboxylic acids (1, 4, 9, and 10) and six trifluoromethyl-substituted quinolinecarboxylic acids (11, 13, 14, 15, 17, and 18) regioisomerically uncontaminated and in a most straightforward way. ( Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003).
CYANOPHENYL DERIVATIVES
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, (2008/06/13)
This application relates to a piperazino-substituted novel cyanophenyl derivative in which a substituted carbamoyl or substituted sulfamoyl group having an aryl, heterocyclic or the like group that may have a substituent group is bonded to one nitrogen atom on the piperazine ring. The compound of this application has an anti-androgen action and is useful in preventing or treating prostatic cancer, benign prostatic hyperplasia and the like diseases.