52 results about "2-Aminophenol" patented technology

The invention discloses a method used for rapid preparation of benzo-heterocycle compound with physical grinding under solvent-free room temperature conditions. According to the method, glacial aceticacid is taken as a catalyst; at solvent-free room temperature conditions, physical grinding is adopted, reaction of 2-substituted arylamines (2-mercapto arylamine, 2-aminophenol, and o-phenylenediamine) and aromatic aldehydes is carried out using physical grinding. The method is friendly to the environment, is simple in operation, is safe, is low in cost, and is high in efficiency. Compared withthe prior art, the advantages are that: the method is suitable for a large amount of functional groups, yield is high, less by-product is generated, operation is simple, the method is safe, cost is low, and the method is friendly to the environment.

Disclosed is an anti-inflammatory agent having an excellent effect and having little adverse side-effects. The anti-inflammatory agent comprises 2-aminophenol or a derivative thereof as an active ingredient.

An object of the present invention is to provide anti-inflammatory agent having an excellent effect and less adverse side-effects. The object is attained by providing an anti-inflammatory agent comprising 2-aminophenol or a derivative thereof as an effective ingredient.

The invention discloses a preparation method of 5-chloro-8-hydroxyquinoline and a purification method thereof, which aims at solving the problem when 4-chloro-2-aminophenol, 4-chloro-2-nitrophenol andglycerol ring are used to obtain 5-chloro-8-hydroxyquinoline, the reaction process is difficult to control, so that a large amount of tar can be generated, the reaction yield is low, the reaction operation is difficult, and a large amount of waste acid is generated after the post treatment. Boric acid and insoluble organic solvents being added into the reaction solution is the innovation of the preparation method, by the method, the acuteness of direct production of acrolein from sulphuric acid and glycerol is mitigated by boric acid, the speed of the acrolein polymerization to generate the tar is reduced, the yield and the safety are effectively improved, and a small amount of an water-insoluble organic solvents can effectively prevent 4-chloro-2-nitrophenol from coagulating on the reactor wall, the problem that it is difficult to control in the process of production operation is solved, which shortens the reaction cycle and improves production efficiency. The preparation method of 5-chloro-8-hydroxyquinoline and purification method thereof has the advantages of less tar, high yield and safe reaction, and can effectively reduce waste acid production and is easy to industrialize.

The present invention discloses a S protein of SARS virus, which has SEQ ID NO.2 aminophenol sequence, and has mutation of (a) 778D to Y; (b) 77D to G; (c) 244T to I; (d) 1182K to Q; (e) 360F to S; (f) 479N to R or K; (g) 480D to G; (h) 609A to L. the invention also discloses nucleic acid encoding the S protein and SARS virus containing the mutations. The invention further discloses medicament for screening the SARS and its vaccine of the S protein aiming at SARS virus.