- Preparation method of 2-chloro-5-cyanopyrimidine compound
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The invention discloses a preparation method of a 2-chloro-5-cyanopyrimidine compound. A route adopted by the preparation method is as follows: cyanoacetic acid is used as a raw material, ioxane is used as a solvent, and a reaction is conducted under the action of N,N-dimethylformamide dimethyl acetal so as to generate 3-(dimethylamino)acrylonitrile, and then a Vilsmeier reaction, an addition reaction, a ring closing reaction and a chlorination reaction are sequentially carried out to finally obtain a finished product, i.e., the 2-chloro-5-cyanopyrimidine compound. According to the synthetic route provided by the preparation method, raw materials are cheap and easily available; aftertreatment is simple; purification is easy; column chromatographic purification is not needed in each step ofreaction; the method can effectively overcome the technical defects of long route, expensive raw material cost, need of column chromatography and the like of other synthesis methods in the prior art;and the preparation method of the 2-chloro-5-cyanopyrimidine compound provided by the invention has important economic benefits on reduction of the drug cost, and is a technology which is low in costand suitable for industrial production.
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Paragraph 0031; 0035
(2020/03/09)
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- Preparation method of 2-chloro-5-cyano nitrogen-containing six-membered heterocyclic compound
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The invention provides a preparation method of a 2-chloro-5-cyano nitrogen-containing six-membered heterocyclic compound. The method comprises the following steps: using a 2-hydroxy-5-bromine nitrogen-containing six-membered heterocyclic compound as a raw material, under existence of a catalyst, in atmosphere of carbon monoxide gas, using methanol as a solvent, and performing a coupling reaction to obtain a methyl 2-hydroxyl nitrogen-containing six-membered heterocyclic ring-5-carboxylate, and sequentially performing an aminolysis reaction, a chlorination reaction with phosphorus oxychloride,and an oxidation reaction to obtain the 2-chloro-5-cyano nitrogen-containing six-membered heterocyclic compound. The preparation method has the advantages of short route and easily available raw material, a post-processing method is simple, no column chromatography is required after each reaction, the reaction product can be purified only by washing and extraction of a solvent, amplification is realized, industrial production is carried out, the method accords with environmental protection requirements, and has important value for actual production.
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Paragraph 0061; 0062; 0063; 0066; 0077; 0078; 0079; 0082
(2019/01/08)
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- ORGANIC FLUORESCENT LUMINESCENT MATERIAL AND ORGANIC ELECTROLUMINESCENT DEVICE
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An organic fluorescent luminescent material and an organic electro-luminescence device are provided. The organic fluorescent luminescent material may be represented by the formula, (Ar)-(Ph)-(X), wherein Ar is Ph include at least one benzene ring, X is a six-membered aromatic ring, and at least one nitrogen atom is located on the six-membered aromatic ring. The organic fluorescent luminescent material can be used in organic electro-luminescence devices.
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Paragraph 0041
(2017/07/06)
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- HETEROAROMATIC COMPOUNDS AS INHIBITORS OF STEAROYL-COENZYME A DELTA-9 DESATURASE
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Heteroaromatic compounds of structural formula I are selective inhibitors of stearoyl-coenzyme A delta-9 desaturase (SCD1) relative to other known stearoyl-coenzyme A desaturases. The compounds of the present invention are useful for the prevention and tr
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Page/Page column 24
(2011/07/06)
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- PYRIDONE AND PYRIDAZONE ANALOGUES AS GPR119 MODULATORS
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Novel compounds of structure Formula (I) or an enantiomer, a diastereomer, or a pharmaceutically acceptable salt thereof, wherein Z, R1, R2, R21, T1, T2, T3 and T4 are defined herein, are provided which are GPR119 G protein-coupled receptor modulators. GPR119 G protein-coupled receptor modulators are useful in treating, preventing, or slowing the progression of diseases requiring GPR119 G protein-coupled receptor modulator therapy. Thus, the disclosure also concerns compositions comprising these novel compounds and methods of treating diseases or conditions related to the activity of the GPR119 G protein-coupled receptor by using any of these novel compounds or a composition comprising any of such novel compounds.
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Page/Page column 104-105
(2010/04/03)
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- ORGANIC COMPOUNDS AND THEIR USES
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The present disclosure relates to compounds relating to the diagnosis and treatment of pathologies relating to the Hedgehog pathway, including but not limited to tumor formation, cancer, neoplasia, and non-malignant hyperproliferative disorders; specifically relating to compounds of formula (I).
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Page/Page column 37
(2008/12/07)
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