17064-45-8

Basic information

• Product Name: 2-Biphenylbenzoxazole
• Synonyms: 2-Biphenylbenzoxazole;2-(BIPHENYL-4-YL)BENZO[D]OXAZOLE;2-([1,1'-Biphenyl]-4-yl)benzo[d]oxazole;2-(biphenyl-4-yl)-1,3-benzoxazole;Benzoxazole,2-[1,1'-biphenyl]-4-yl-
• CAS NO: 17064-45-8
• Molecular Formula: C₁₉H₁₃NO
• Molecular Weight: 271.31262
• Mol File: 17064-45-8.mol
• Article Data: 25

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 2-Biphenylbenzoxazole(CAS DataBase Reference)
• NIST Chemistry Reference: 2-Biphenylbenzoxazole(17064-45-8)
• EPA Substance Registry System: 2-Biphenylbenzoxazole(17064-45-8)

Safety Data

• Hazardous Substances Data: 17064-45-8(Hazardous Substances Data)

Usage

General Description

2-Biphenylbenzoxazole, also known as PBB or bis(2-benzoxazolyl)benzene, is a fluorescent brightener and optical brightener. It is used as a whitening agent in plastics, fibers, coatings, and detergents to enhance brightness and color appearance. It absorbs ultraviolet light and emits blue light, resulting in a fluorescent effect that makes materials appear whiter and brighter. PBB is also used in the production of various products such as paper, adhesives, and textiles to improve their optical properties. Additionally, it is a key component in the manufacturing of fluorescent dyes and pigments. However, there are concerns about its potential health and environmental impacts, and it is important to handle and dispose of it properly.

Upstream product

• 273-53-0 benzoxazole 
• 1198184-07-4 [1,1'-biphenyl]-4-yl 1H-imidazole-1-sulfonate 
• 119072-55-8 tert-butylisonitrile 
• 1591-31-7 4-iodo-biphenyl 
• 95-55-6 2-amino-phenol 
• 324-74-3 4-fluoro-biphenyl 
• 2369-31-5 1‐{[1,1'‐biphenyl]‐4‐yl}‐2,2,2‐trifluoroethanone 
• 117649-27-1 2-(4-bromo-benzylidenamino)-phenol 
• 1357514-55-6 methyl 3-([1,1′-biphenyl]-4-yl)-3-oxopropanedithioate 
• 1667-11-4 biphenyl-4-methylchloride 
• 92-66-0 4-bromo-1,1'-biphenyl 
• 586-76-5 4-Bromobenzoic acid 
• 3164-13-4 2-(4-bromophenyl)-1,3-benzoxazole 
• 98-80-6 phenylboronic acid 

Relevant articles and documents

Delivering 2-Aryl Benzoxazoles through Metal-Free and Redox-Neutral De-CF3Process

An unexpected cleavage of the Csp3-CF3 bond of CF3-hydrobenzoxazoles has been disclosed, affording a range of 2-aryl benzoxazoles under metal-free and redox-neutral conditions. This transformation has demonstrated broad substrate scope and good compatibility of functional groups. 2-Aryl benzothiazole and 2-aryl benzoimidazole could be smoothly assembled in the same manner. On the basis of preliminary mechanistic studies, base initiated and aromatization driven β-carbon elimination was considered to be the key step for the formation of 2. This reaction offers an alternative, facile, and sustainable route to access important 2-aryl benzoxazole motifs.

Visible Light-Induced Copper-Catalyzed C—H Arylation of Benzoxazoles?

A general method for visible light-induced copper-catalyzed arylation of sp2 C—H bonds of azoles has been developed. The method employs aryl halide as the coupling partner, lithium alkoxide as base. A variety of azoles including benzooxazole and benzothiazole can be arylated. Furthermore, electron-poor heterocycles such as thiophene possessing one electron-withdrawing group can also be arylated.

Ni-Catalyzed C?F Bond Functionalization of Unactivated Aryl Fluorides and Corresponding Coupling with Oxazoles

A Ni-catalyzed C?F bond functionalization of unactivated aryl fluorides with oxazoles as coupling partners was developed. Various arylated oxazoles could be obtained in moderate to good yields in the presence of Ni(cod)2/IMes catalytic system.