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N-methylbenzothiazol-2-amine, with the molecular formula C8H9NHS, is an organic compound characterized by a benzothiazole backbone and a methyl group attached to the nitrogen atom. It serves as a versatile building block in the synthesis of pharmaceuticals, agrochemicals, and dyes, and is also utilized in the production of rubber accelerators, antioxidants, and antidegradants for rubber products. Due to its potential toxic and irritant effects, it requires careful handling and adherence to safety protocols.

16954-69-1

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16954-69-1 Usage

Uses

Used in Pharmaceutical Industry:
N-methylbenzothiazol-2-amine is used as a chemical intermediate for the synthesis of various pharmaceuticals, contributing to the development of new drugs and therapeutic agents.
Used in Agrochemical Industry:
In the agrochemical sector, N-methylbenzothiazol-2-amine is employed as a building block in the creation of agrochemicals, aiding in the development of pesticides and other agricultural chemicals to protect crops and enhance yield.
Used in Dye Industry:
N-methylbenzothiazol-2-amine is utilized as a key component in the production of dyes, providing color and stability to various products in the textile, printing, and other industries.
Used in Rubber Industry:
As a rubber accelerator, N-methylbenzothiazol-2-amine is used to speed up the vulcanization process, improving the efficiency and performance of rubber products. Additionally, it serves as a component in the production of antioxidants and antidegradants, enhancing the durability and longevity of rubber goods.

Check Digit Verification of cas no

The CAS Registry Mumber 16954-69-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,9,5 and 4 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 16954-69:
(7*1)+(6*6)+(5*9)+(4*5)+(3*4)+(2*6)+(1*9)=141
141 % 10 = 1
So 16954-69-1 is a valid CAS Registry Number.
InChI:InChI=1/C8H8N2S/c1-9-8-10-6-4-2-3-5-7(6)11-8/h2-5H,1H3,(H,9,10)

16954-69-1SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name N-methyl-1,3-benzothiazol-2-amine

1.2 Other means of identification

Product number -
Other names N-methyl-2-aminobenzo[d]thiazole

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:16954-69-1 SDS

16954-69-1Relevant academic research and scientific papers

One-pot synthesis of 2-aminobenzothiazoles using a new reagent of [Bmim]Br3 in [Bmim]BF4

Le, Zhang-Gao,Xu, Jian-Ping,Rao, Huo-Yu,Ying, Min

, p. 1123 - 1124 (2006)

The one-pot direct synthesis of 2-aminobenzothiazoles from phenyl isothiocyanate and amines using a new reagent of 1-butyl-3-methylimidazolium tribromide ([Bmim]Br3) in ionic liquid 1-butyl-3-methyl-imidazolium tetraflouoroborate ([Bmim]BF4) is described.

Synthesis and properties of esters of benzothiazolylamino(imino)propionic acids

Ambartsumova

, p. 859 - 864 (1997)

Reaction of 2-alkylaminothiazoles with methyl acrylate leads predominantly to the formation of N-alkyl-N-(β-methoxycarbonylethyl)-2-aminobenzothiazoles on boiling or to 2-(alkylimino)-3-(β-methoxycarbonylethyl)-benzothiazolines at room temperature. A complex mixture of products was obtained from unsubstituted 2-aminobenzothiazole and methyl acrylate, of which the main was 2-oxo-3,4-dihydro-2H-pyrimido[2,1-b]benzothiazole. Complete or partial destruction of the benzothiazolines occurred on heating to 140°C. 1998 Plenum Publishing Corporation.

Recyclable covalent triazine framework-supported iridium catalyst for the N-methylation of amines with methanol in the presence of carbonate

Liu, Peng,Yang, Jiazhi,Ai, Yao,Hao, Shushu,Chen, Xiaozhong,Li, Feng

, p. 281 - 290 (2021/03/26)

An iridium complex Cp*Ir@CTF, which is synthesized by the coordinative immobilization of [Cp*IrCl2]2 on a functionalized covalent triazine framework (CTF), was found to be a general and highly efficient catalyst for the N-methylation of amines with methanol in the presence of carbonate. Under environmentally benign conditions, a variety of desirable products were obtained in high yields with complete selectivities and functional group friendliness. Furthermore, the synthesized catalyst could be recycled by simple filtration without obvious loss of catalytic activity after sixth cycle. Notably, this research exhibited the potential of covalent triazine framework-supported transition metal catalysts for hydrogen autotransfer process.

N-Methylation of Amines with Methanol in the Presence of Carbonate Salt Catalyzed by a Metal-Ligand Bifunctional Ruthenium Catalyst [(p-cymene)Ru(2,2′-bpyO)(H2O)]

Liu, Peng,Tung, Nguyen Thanh,Xu, Xiangchao,Yang, Jiazhi,Li, Feng

, p. 2621 - 2631 (2021/02/27)

A ruthenium complex [(p-cymene)Ru(2,2′-bpyO)(H2O)] was found to be a general and efficient catalyst for the N-methylation of amines with methanol in the presence of carbonate salt. Moreover, a series of sensitive substituents, such as nitro, ester, cyano, and vinyl groups, were tolerated under present conditions. It was confirmed that OH units in the ligand are crucial for the catalytic activity. Notably, this research exhibited the potential of metal-ligand bifunctional ruthenium catalysts for the hydrogen autotransfer process.

Borane-Trimethylamine Complex as a Reducing Agent for Selective Methylation and Formylation of Amines with CO2

Zhang, Yanmeng,Zhang, He,Gao, Ke

supporting information, p. 8282 - 8286 (2021/10/25)

We report herein that a borane-trimethylamine complex worked as an efficient reducing agent for the selective methylation and formylation of amines with 1 atm CO2 under metal-free conditions. 6-Amino-2-picoline serves as a highly efficient catalyst for the methylation of various secondary amines, whereas in its absence, the formylation of primary and secondary amines was achieved in high yield with high chemoselectivity. Mechanistic studies suggest that the 6-amino-2-picoline-borane catalytic system operates like an intramolecular frustrated Lewis pair to activate CO2.

Bimetallic Bis-NHC-Ir(III) Complex Bearing 2-Arylbenzo[d]oxazolyl Ligand: Synthesis, Catalysis, and Bimetallic Effects

Huang, Shuang,Hong, Xi,Cui, He-Zhen,Zhan, Bing,Li, Zhi-Ming,Hou, Xiu-Feng

, p. 3514 - 3523 (2020/10/09)

Herein, an unprecedented bimetallic bis-NHC Cp*Ir complex 1 bearing 2-arylbenzo[d]oxazolyl and NHC ligands is reported. A significant increase in activity was observed for N-methylation of amines and reduction of aldehydes with MeOH catalyzed by 1 compared to the monometallic analogues (2-11). Under the optimal conditions, it showed to be highly effective in N-methylation of nitroarenes with MeOH as both C1 and H2 source. Substrates, including aromatic amines, ketones, and nitro compounds with various functional groups, can be well-tolerated. Mechanistic studies and DFT calculation highlight the significance of bimetallic centers cooperativity.

C-H Functionalization of Benzothiazoles via Thiazol-2-yl-phosphonium Intermediates

Sch?mberg, Fritz,Vilotijevic, Ivan,Wagner, Konrad,Zi, You

supporting information, (2020/05/05)

Benzothiazoles undergo regioselective C2-H functionalization with triphenylphosphine to form thiazol-2-yl-triphenylphosphonium salts, and these phosphonium salts react with a wide range of O- A nd N-centered nucleophiles to give the corresponding ethers, amines, and C-N biaryls. The reactions proceed under mild conditions and allow for the recovery of triphenylphosphine at the end of the sequence. In the presence of hydroxide, phosphonium salts undergo disproportionation, resulting in the reduction of the benzothiazole, which is useful for specific C2 deuteration of benzothiazoles.

Method for synthesizing benzothiazole by microwave radiation of benzothioamide compound in aqueous phase

-

Paragraph 0013; 0019, (2019/02/13)

The invention discloses a method for synthesizing benzothiazole by microwave radiation of a benzothioamide compound in an aqueous phase. The method includes the steps: adding the benzothioamide compound into the aqueous phase under microwave conditions; performing cyclization under alkaline conditions to generate the benzothiazole. The method for preparing the benzothiazole is environmentally friendly, simple and convenient in operation, safe, cheap and efficient. Compared with the prior art, the method is applicable to a lot of functional groups, high in yield, few in by-products, simple in operation, safe, low in cost and environmentally friendly.

Convenient and reliable routes towards 2-aminothiazoles: Palladium-catalyzed versus copper-catalyzed aminations of halothiazoles

Toulot, Stephanie,Heinrich, Timo,Leroux, Frederic R.

supporting information, p. 3263 - 3272 (2013/12/04)

Two efficient methods for the amination of 2-halothiazoles are presented here. A first protocol requires a Pd/L system. Several 2-aminothiazoles were synthesized under optimized conditions and isolated in good yields. The first palladium-catalyzed C-N coupling reactions between 2-halothiazoles and primary alkylamines are presented. In a second part, ligand-free copper-catalyzed aminations of 2-halothiazoles by alkylamines and aniline in a green solvent have been developed. The protocol is very effective for primary and secondary amines and perfectly tolerates the presence of another halide moiety on the 2-halothiazole. The reaction occurs under the assistance of microwave irradiation, which drastically decreases the reaction time. The reaction leads to the formation of 2-aminothiazoles, key molecules in pharmaceutical research. Copyright

Laccase-catalysed homocoupling of primary aromatic amines towards the biosynthesis of dyes

Sousa, Ana Catarina,Martins, Lígia O.,Robalo, M. Paula

supporting information, p. 2908 - 2917 (2014/03/21)

Coloured disubstituted benzoquinonimine trimeric structures are obtained as main reaction products of the oxidation of p-electron donor pri-mary aromatic amines using two different laccases, CotA-laccase from Baccilus subtilus and TvL from Trametes versicolor. These orange-red to purple products, presenting high molar extinction coeffi-cients, presumably result from oxidative homocou-pling reactions, through the formation of N-C bonds at positions 2 and 5, of the laccase oxidised inter-mediate as showed in the proposed oxidative path-way. The product of 1,4-phenylenediamine is shown to be the trimer known as Bandrowski's base which has an established role in hair and fur dyeing. Our results also show that the occurrence and/or rates of oxidation of aromatic amines are strongly dependent on the presence of p-electron releasing substituents in the aromatic ring and are independent on the properties of the enzyme used. Overall our data con-tribute for (i) understanding key features of laccase reactivity with p-substituted aromatic amines and (ii) establishing enzymatic processes that lead to the syn-thesis of coloured bio-products under mild condi-tions with potential impact in the cosmetic and dye industries.

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