72142-85-9

Upstream product

• 634-42-4 N-1-naphthalenyl-benzamide 
• 134-32-7 1-amino-naphthalene 
• 108-88-3 toluene 
• 86-57-7 1-Nitronaphthalene 
• 100-51-6 benzyl alcohol 
• 28353-74-4 3,4-dihydronaphthalen-1(2H)-one O-acetyl oxime 
• 100-52-7 benzaldehyde 
• 100-46-9 benzylamine 
• 78569-36-5 (E)-N-(naphthalen-1-yl)-1-phenylmethanimine 
• 96963-47-2 N-(naphthalen-1-yl)benzothioamide 
• 98-88-4 benzoyl chloride 
• 100-58-3 phenylmagnesium bromide 
• 551-06-4 1-isothiocyanatonaphthalene 

Downstream Products

• 63512-54-9 1-aminonaphthalene-2-thiol 

Relevant academic research and scientific papers

Graphene oxide-catalyzed synthesis of benzothiazoles with amines and elemental sulfur via oxidative coupling strategy of amines to imines

The graphene oxide-catalyzed coupling and cyclization reactions of primary amines with elemental sulfur was developed to afford various optically property benzothiazoles. This coupling and cyclization strategies proceeded under the oxidant system graphene oxide/O2 and constructed carbon-heteroatom (N, S) bonds with amines and elemental sulfur. Due to benzothiazoles as common chromophores, these products exhibited intriguing fluorescence properties, including outstanding Stokes shifts (up to 161 nm) and quantum yields (up to 74%). Utilizing the products’ unique fluorescence response in different solvents, β-naphthothiazole 4a showed excellent aggregation-induced emission properties in 1,2-dichloroethane, which was 60 times higher than in tetrahydrofuran.

Visible-Light Carbon Nitride-Catalyzed Aerobic Cyclization of Thiobenzanilides under Ambient Air Conditions

A metal-free heterogeneous photocatalysis has been developed for the synthesis of benzothiazoles via intramolecular C-H functionalization/C-S bond formation of thiobenzanilides by inexpensive graphitic carbon nitride (g-C3N4) under visible-light irradiation. This reaction provides access to a broad range of 2-substituted benzothiazoles in high yields under an air atmosphere at room temperature without addition of a strong base or organic oxidizing reagents. In addition, the catalyst was found to be stable and reusable after five reaction cycles.

Benzothiazole solid-state luminescent material as well as preparation method and application thereof

The invention provides a benzothiazole solid-state luminescent material as well as a preparation method and an application thereof, and relates to the technical field of solid-state luminescent materials. The benzothiazole solid-state luminescent material provided by the invention has a structure shown as a formula I, wherein Ar in the formula I is phenyl, naphthyl or anthryl. The benzothiazole solid-state luminescent material provided by the invention is good in color tone, saturation and color rendering property, high in luminous efficiency, and strong in light stability and chemical stability. As shown in the result of the embodiment of the invention, the chromaticity coordinate of the benzothiazole solid-state luminescent material provided by the invention is (0.27-0.28, 0.34-0.38), the color rendering index is 64-73, the color temperature is 8089-8341, and the lighting effect is 4.8-5.68 lm/W.

Riboflavin as Photoredox Catalyst in the Cyclization of Thiobenzanilides: Synthesis of 2-Substituted Benzothiazoles

Benzothiazoles are synthesized from thiobenzanilides using riboflavin as a photosensitizer and potassium peroxydisulfate as a sacrificial oxidizing agent under visible light irradiation. The methodology accepts a broad range of functional groups and affords the 2-substituted benzothiazoles by transition-metal-free organic photoredox catalysis under very mild conditions.

Exogenous Photosensitizer-, Metal-, and Base-Free Visible-Light-Promoted C-H Thiolation via Reverse Hydrogen Atom Transfer

Visible-light-driven, intramolecular C(sp2)-H thiolation has been achieved without addition of a photosensitizer, metal catalyst, or base. This reaction induces the cyclization of thiobenzanilides to benzothiazoles. The substrate absorbs visible light, and its excited state undergoes a reverse hydrogen-atom transfer (RHAT) with 2,2,6,6-tetramethylpiperidine N-oxyl to form a sulfur radical. The addition of the sulfur radical to the benzene ring gives an aryl radical, which then rearomatizes to benzothiazole via RHAT.

ORGANIC COMPOUNDS AND ORGANIC ELECTRO LUMINESCENCE DEVICE COMPRISING THE SAME

The present invention relates to a novel compound and an organic electroluminescent device comprising the same. A compound according to the present invention is used for an organic layer, preferably a light emitting layer, a hole transporting layer, an electron transport layer, or an electron transport auxiliary layer of the organic electroluminescent device, thereby being able to improve luminous efficiency, driving voltage, lifespan and the like of the organic electroluminescent device.COPYRIGHT KIPO 2019

Photocatalytic Oxidative C-H Thiolation: Synthesis of Benzothiazoles and Sulfenylated Indoles

We report studies on the photocatalytic formation of C-S bonds to form benzothiazoles via an intramolecular cyclization and sulfenylated indoles via an intermolecular reaction. Cyclic voltammetry (CV) and density functional theory studies suggest that benzothiazole formation proceeds via a mechanism that involves an electrophilic sulfur radical, while the indole sulfenylation likely proceeds via a nucleophilic sulfur radical adding into a radical cationic indole. These conditions were successfully extended to several thiobenzamides and indole substrates.

Iron-Promoted Three-Component 2-Substituted Benzothiazole Formation via Nitroarene ortho-C-H Sulfuration with Elemental Sulfur

A three-component procedure for the preparation of 2-substituted benzothiazoles from nitroarenes, alcohols, and sulfur powder is described. The reaction showed a good functional group tolerance to provide the heterocyclic products in moderate to good yields. The sequential assembly involving nitro reduction, C-N condensation, and C-S bond formation has been realized in one pot.

Multi-substituted naphtho[1,2-d]thiazole and derivatives and synthesis method thereof

The invention relates to multi-substituted naphtho[1,2-d]thiazole and derivatives and a synthesis method thereof. For the first time, ketoxime ester compounds, formaldehyde compounds and sulfur powderare converted into multi-substituted naphtho[1,2-d]thia

Catalyst- and Supporting-Electrolyte-Free Electrosynthesis of Benzothiazoles and Thiazolopyridines in Continuous Flow

A catalyst- and supporting electrolyte-free method for electrochemical dehydrogenative C?S bond formation in continuous flow has been developed. A broad range of N-arylthioamides have been converted to the corresponding benzothiazoles in good to excellent yields and with high current efficiencies. This transformation is achieved using only electricity and laboratory grade solvent, avoiding degassing or the use of inert atmosphere. This work highlights three advantages of electrochemistry in flow, which is (i) a supporting electrolyte-free reaction, (ii) an easy scale-up of the reaction without the need for a larger reactor and, (iii) the important and effective impact of having a good mixing of the reaction mixture, which can be achieved effectively with the use of flow systems. This clearly improves the reported methods for the synthesis of benzothiazoles.