61364-37-2

Usage

Uses

Used in Pharmaceutical Industry:
R-Mirtazapine is used as an enantiomer of Mirtazapine for its antinociceptive effects in acute thermal nociception. This application is significant because it has the potential to provide relief from pain without the pronociceptive effects observed in the S-Mirtazapine enantiomer.
Additionally, R-Mirtazapine could be further investigated for its potential use in the development of new antidepressant medications, as it is an enantiomer of an existing antidepressant with demonstrated antinociceptive properties. This could lead to the creation of more effective and safer treatments for depression and related conditions.

InChI:InChI=1/C17H19N3/c1-19-9-10-20-16(12-19)15-7-3-2-5-13(15)11-14-6-4-8-18-17(14)20/h2-8,16H,9-12H2,1H3/t16-/m0/s1

Upstream product

• 61337-89-1 2-(4-methyl-2-phenylpiperazin-1-yl)-pyridine-3-methanol 
• 1071838-96-4 rac-1,2,3,4,10,14b-hexahydro-2-methylpyrazino[2,1-a]pyrido[2,3-c][2]benzazepin-10-ol 
• 191546-96-0 3,4,10,14b-tetrahydro-2-methyl-pyrazino[2,1-a]pyrido[2,3-c][2]benzazepin-1(2H)-one 
• 1071504-86-3 (10,11-dihydro-5H-benzo[e]pyrido[2,3-b]azepin-10-ylmethyl)(2-chloro-ethyl)-methylamine 
• 75-75-2 methanesulfonic acid 
• 1071546-33-2 (14bS)-1,3,4,14b-tetrahydro-2-methyl-pyrazino[2,1-a]pyrido[2,3-c][2]benzazepin-10(2H)-one 
• 1071546-36-5 (14bS)-1,2,3,4,10,14b-Hexahydro-2-methylpyrazino[2,1-a]pyrido[2,3-c][2]benzazepin-10-ol 
• 824954-89-4 2-[(2S)-4-methyl-2-phenyl-1-piperazinyl]-3-pyridinemethanol 
• 85650-52-8 Mirtazapine 
• 130277-16-6 2-amino-3-benzylpyridine 
• 1071504-90-9 ((R)-10,11-dihydro-5H-benzo[e]pyrido[2,3-b]azepin-10-ylmethyl)-(2-hydroxyethyl)-methylamine 
• 1071504-78-3 (R)-(-)-10,11-dihydro-5H-benzo[e]pyrido[2,3-b]azepine-10-N-methylcarboxamide 
• 1071504-65-8 10,11-dihydro-5H-benzo[e]pyrido[2,3-b]azepine-10-N-methylcarboxamide 
• 1071504-88-5 ((R)-10,11-dihydro-5H-benzo[e]pyrido[2,3-b]azepin-10-ylmethyl)-methyl-amine 

Downstream Products

• 61337-86-8 1,2,3,4,10,14b-hexahydro-8-bromo-2-methyl-pyrazino<2,1-a>pyrido<2,3-c><2>benzazepine 
• 61337-67-5 (-)-Mirtazapine 
• 680993-85-5 S-mirtazapine malonate 

Relevant academic research and scientific papers

Preparation method and intermediate product of mirtazapine

The invention discloses a preparation method and an intermediate product of mirtazapine. The preparation method comprises the following steps: in an organic solvent, carrying out a cyclization reaction on a compound represented by a formula I and/or an inorganic acid salt thereof in the presence of a sulfonic acid resin, and separating to obtain a solid, ie., the mirtazapine intermediate product;and carrying out an ion exchange reaction on the mirtazapine intermediate product and an alkali to obtain mirtazapine. The preparation method has the advantages of simplicity and convenience in operation, easiness in product separation, small pollution, suitability for industrial production and the like.

METHOD FOR PRODUCING PHENYLPIPERAZINE PYRIDINE METHYL ACETATE

PROBLEM TO BE SOLVED: To provide a method for producing [2-(4-methyl-2-phenylpiperazin-1-yl)pyridin-3-yl] methyl acetate capable of improving the quality of mirtazapine and improving the efficiency of workability in an industrial scale. SOLUTION: There is provided a method for producing pyridine methyl acetate, in which a mixture of [2-(4-methyl-2-phenylpiperazine-1-yl)pyridin-3-yl] methyl acetate produced through a reaction between 2-(4-methyl-2-phenyl-1-piperazinyl)-3-pyridinemethanol and acetic anhydride in an organic solvent is crystallized in a mixed solvent or a single solvent. SELECTED DRAWING: None COPYRIGHT: (C)2020,JPOandINPIT

Simultaneous enantioselective determination of seven psychoactive drugs enantiomers in multi-specie animal tissues with chiral liquid chromatography coupled with tandem mass spectrometry

In stock farming, illegal use of antipsychotics has caused the food safety problem. This paper presents for the first time, a multi-residues method for the simultaneous enantioselective determination of seven antipsychotics in pork, beef and lamb muscles. The behaviors of Chiralpak AGP toward changes in pH and organic modifier in mobile phase were studied, and all analytes were rapidly separated within 30 min. The calibration curves of all enantiomers were linear in the range of 1–250 ng g?1, with correlation coefficient above 0.9931. The recoveries of the targeted compounds were higher than 82.1%, with repeatability and intermediate precision lower than 18.2% and 17.4%, respectively. In three matrices, the limit of detection and limit of quantification ranged from 0.20 to 0.65 ng g?1 and from 0.40 to 1.00 ng g?1, respectively. The proposed method can be used to provide additional information for the reliable risk assessment of chiral antipsychotics.

A synthesis method of midanping

The invention discloses a method for synthesizing mirtazapine. According to the method, 2-halogenated nicotinonitrile is used as an initial compound, and 2-chloronicotinamide, 2-(4-methyl-2phenyl-1-piperazinyl)nicotinamide, 2-(4-methyl-2phenyl-1-piperazinyl)nicotinic acid, 1-(3-hydroxymethylpyridyl-2-)-4-methyl-2-phenylpiperazine and other intermediate products are sequentially synthesized to prepare the mirtazapine. Against the defects in a current mirtazapine synthesizing method, the process is improved, a new synthesizing route is designed, and a preparation method which is economical and is easy for practical operation is provided to mirtazapine synthesis. The method is suitable for large-scale industrial production.

METHOD FOR PRODUCING MIRTAZAPINE

PROBLEM TO BE SOLVED: To provide a method in which mirtazapine useful as an antidepressant can be produced at high quality as well as at high production yield. SOLUTION: In a method for producing mirtazapine by reacting 2-(4-methyl-2-phenylpiperazin-1-yl)-3-pyridinemethanol with sulfuric acid, when an alcohol solution of crude mirtazapine obtained as a concentrated residue of a toluene extraction liquid is subjected to activated carbon treatment, the amount of toluene is made 15 g or less with respect to 100 g of the alcohol solution, whereby the reduction efficiency of specific impurities during the activated carbon treatment can be improved, and as a result, mirtazapine with high quality can be produced. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT

MANUFACTURING METHOD OF MIRTAZAPINE

PROBLEM TO BE SOLVED: To provide a method for manufacturing mirtazapine useful as an antidepressant at high quality and high manufacturing yield. SOLUTION: Mirtazapine with reduced impurities is manufactured by crystallizing mirtazapine by using a mixed solvent of a good solvent selected from ethanol, propanol, isopropanol, acetone, tetrahydrofuran and dioxane and a poor solvent which is water, or a mixed solvent of a good solvent selected from propanol and isopropanol and a poor solvent which is heptane in a method of manufacturing mirtazapine by reacting 2-(4-methyl-2-phenyl-1-piperazinyl)-3-pyridinemethanol and sulfuric acid. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT

MANUFACTURING METHOD OF MIRTAZAPINE

PROBLEM TO BE SOLVED: To provide a method for manufacturing mirtazapine useful as an antidepressant at high quality and high manufacturing yield. SOLUTION: Mirtazapine with reduced impurities is manufactured by crystallizing mirtazapine by using a mixed solvent of a good solvent selected from an alcohol solvent, a ketone solvent, an ether solvent and an ester solvent and a poor solvent selected from heptane and hexane, or a mixed solvent of a good solvent and a poor solvent in which a good solvent which is acetonitrile and a poor solvent which is water in a method of manufacturing mirtazapine by reacting 2-(4-methyl-2-phenyl-1-piperazinyl)-3-pyridinemethanol and sulfuric acid. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT

1-(3-CARBOXYPYRIDYL-2-)-2-PHENYL-4-METHYLPIPERAZINE HAVING CRYSTAL STRUCTURE AND METHOD FOR PRODUCING THE SAME

PROBLEM TO BE SOLVED: To provide a novel crystal form of pyridinecarboxylic acid compound having high solubility in an ether solvent, such as THF, which can be used in an industrial scale, and a method for producing a high-purity pyridinemethanol compound. SOLUTION: The present invention provides a 1-(3-carboxypyridyl-2-)-2-phenyl-4-methylpiperazine (pyridinecarboxylic acid compound) of novel crystalline form having a characteristic peak at least at 10.1°±0.2° and 13.9°±0.2° in 2θ, in X-ray diffraction using Cu-Kα rays, by crystallization in acetate ester and methanol solvent systems. SELECTED DRAWING: Figure 1 COPYRIGHT: (C)2018,JPO&INPIT

METHOD FOR PRODUCING MIRTAZAPINE

PROBLEM TO BE SOLVED: To provide a method by which mirtazapine useful as an antidepressant drug can be produced with high quality and high production yield in the present invention. SOLUTION: A method for producing mirtazapine includes allowing 2-(4-methyl-2-phenyl-1-piperazinyl)-3-pyridinemethanol and sulfuric acid to react with each other by stirring and mixing in a reaction vessel including a stirring body. In the method for producing mirtazapine, the stirring and mixing are performed by setting a tip rate which is the rate of a tip of the stirring body in the stirring at 1.0 m/s or more. SELECTED DRAWING: Figure 1 COPYRIGHT: (C)2018,JPOandINPIT

MANUFACTURING METHOD OF MIRTAZAPINE

PROBLEM TO BE SOLVED: To provide a method capable of manufacturing mirtazapine useful as antidepressant at high quality and high manufacturing yield without needs for complicated purification operation. SOLUTION: Mirtazapine with largely suppressed by-production amount of impurities during reaction can be manufactured by reacting with use of sulfuric acid with concentration of 85.0% or more and less than 96.0% in a method for manufacturing mirtazapine by reacting 2-(4-methyl-2-phenyl)-1-piperazinyl)-3-pyridinemethanol and sulfuric acid. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPO&INPIT