1857-54-1

Upstream product

• 1374225-39-4 (Z)-5-chloro-2-(styrylthio)aniline 
• 40669-47-4 N-methyl-N,2-diphenylacetamide 
• 1004-00-8 4-chloro-2-aminobenzenethiol 
• 29124-55-8 2-amino-4-chlorophenyl disulfide 
• 536-74-3 phenylacetylene 
• 100-42-5 styrene 
• 6828-35-9 5-chloro-2-iodoaniline 
• 621-82-9 Cinnamic acid 
• 103-80-0 phenylacetyl chloride 
• 932-87-6 1-Bromo-2-phenylacetylene 
• 7436-90-0 2,2-dibromostyrene 
• 122-78-1 phenylacetaldehyde 
• 1009-07-0 N-(5-chloro-2-mercaptophenyl)acetamide 

Downstream Products

• 32729-67-2 (5-chloro-1,3-benzothiazol)-2-yl(phenyl)methanone 

Relevant academic research and scientific papers

S 8-Mediated Cyclization of Bis(2-aminophenyl) Disulfide/Diselenide with Arylacetylenes/Styrenes: Access to 2-(Arylmethyl)-1,3-benzothiazoles/benzoselenazoles

A novel S8-mediated approach to benzothiazoles/benzoselenazoles from bis(2-aminophenyl) disulfides/diselenides and phenylacetylenes or styrenes has been developed. 2-(Arylmethyl)-1,3-benzoselenazoles were comprehensively synthesized for the first time. The reactions proceeded in moderate to excellent yields, and with a gramscale application.

Elemental Sulfur-Promoted Benzoxazole/Benzothiazole Formation Using a C=C Double Bond as a One-Carbon Donator

An efficient method to assemble diverse benzoxazoles/benzothiazoles in good yields was developed via oxidative cyclization with 2-aminothiophenols or 2-iodoanilines as raw materials. In this protocol, elemental sulfur was used as the effective oxidant and C atoms on the C=C double bond were introduced as a one-carbon donator.

Method for synthesizing 2-substituted benzothiazole by one-pot method

The invention relates to a method for synthesizing 2-substituted benzothiazole by a one-pot method. The preparation method comprises the following specific steps: dissolving a 2-Iodoaniline compound,a styrene compound, elemental sulfur, an alkaline medium

An efficient synthesis of benzothiazole using tetrabromomethane as a halogen bond donor catalyst

An efficient and mild protocol has been developed for the synthesis of 2-substituted benzothiazole under solvent- and metal-free conditions using CBr4 as the catalyst. This process involves the activation of a thioamide through halogen bond formation between the sulphur atom of the thioamide and bromine atom of the CBr4 molecule. The presence of halogen-bonding interaction between N-methylthioamides and tetrabromomethane has been demonstrated with several control experiments, spectroscopic analysis and density functional theory (DFT). This methodology has a wide substrate scope for the synthesis of both 2-alkyl and 2-aryl substituted benzothiazoles.

Elemental sulfur mediated 2-substituted benzothiazole formation from 2-aminobenzenethiols and arylacetylenes or styrenes under metal-free conditions

An oxidative cyclization of 2-aminothiophenols and arylacetylenes or styrenes for the synthesis of 2-alkylbenzothiazoles and 2-acylbenzothiazoles has been developed. Elemental sulfur was used as the effective oxidant to give the corresponding product in g

Elemental sulfur mediated synthesis of benzoxazoles, benzothiazoles and quinoxalines: Via decarboxylative coupling of 2-hydroxy/mercapto/amino-anilines with cinnamic acids

An easy and practical method has been developed for the synthesis of 2-benzylbenzoxazoles and 2-benzylbenzothiazoles using sulfur mediated decarboxylative coupling of cinnamic acids with 2-hydroxyanilines and 2-mercaptoanilines respectively under metal- and solvent-free conditions. However, the reaction of 2-aminoanilines with cinnamic acids leads to the formation of 2-arylquinoxalines under the same set of reaction conditions. The transformation is versatile and compatible with a number of functional groups.

Metal-free aerobic oxidation of benzazole derivatives

2-Benzyl benzothiazoles and benzimidazoles are easily oxidized under air and basic conditions to give the corresponding ketones in good yields. The use of palladium acetate as a catalyst has little effect and even gives, in some cases, much lower yields.

Iodine-mediated intramolecular oxidative cyclization of 2-(styrylthio)anilines: Synthesis of 2-substituted benzothiazoles

A novel metal-free iodine-mediated intramolecular oxidative cyclization protocol is presented, which allows for the preparation of various 2-substituted benzothiazoles. Georg Thieme Verlag Stuttgart · New York.

Synthesis of heteroaryl ketones via tandem reaction of 1,1-dibromoethenes

A novel method for the synthesis of heteroaryl ketones through one-pot tandem reaction of 1,1-dibromoethenes with 2-amino(thio)phenols promoted by TBAF·3H2O and RuCl3(5%)/air was developed. This novel method includes several reactions in one-pot and utilizes economical yet efficient reagents to generate synthetically and biologically interesting heteroaryl ketones under mild conditions with good efficiency.

A novel and practical synthesis of 2-benzoylbenzothiazoles and 2-benzylbenzothiazoles

A novel methodology for the synthesis of 2-benzoylbenzothiazoles and 2-benzylbenzothiazoles through FeCl3·6H2O catalyzed, air oxidized tandem process from commercially available 2-aminothiophenols and phenylacetaldehydes by using an