4751-41-1

Basic information

• Product Name: 2,2'-(2,5-furandiyl)bis-1H-benzimidazole
• Synonyms: 2,2'-(2,5-furandiyl)bis-1H-benzimidazole;Einecs 225-273-5
• CAS NO: 4751-41-1
• Molecular Formula: C₁₈H₁₂N₄O
• Molecular Weight: 300.31408
• EINECS: 225-273-5
• Mol File: 4751-41-1.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 627.5°Cat760mmHg
• Flash Point: 352.6°C
• Appearance: /
• Density: 1.402g/cm³
• CAS DataBase Reference: 2,2'-(2,5-furandiyl)bis-1H-benzimidazole(CAS DataBase Reference)
• NIST Chemistry Reference: 2,2'-(2,5-furandiyl)bis-1H-benzimidazole(4751-41-1)
• EPA Substance Registry System: 2,2'-(2,5-furandiyl)bis-1H-benzimidazole(4751-41-1)

Safety Data

• Hazardous Substances Data: 4751-41-1(Hazardous Substances Data)

Usage

Chemical classification

Benzimidazole derivative

Contains

Furan group

Common uses

Fluorescent whitening agent

Industries

Textiles, plastics, and paper

Property

Absorbs ultraviolet light

Emission

Emits blue light

Purpose

Enhances brightness and whiteness of materials

Potential pharmaceutical applications

Anti-tumor and anti-inflammatory agent

Characteristics

Versatile and valuable chemical

Diverse uses

Industrial and medical applications

Upstream product

• 3238-40-2 furan-2,5-dicarboxylic acid 
• 95-54-5 1,2-diamino-benzene 

Relevant articles and documents

Process for the preparation of bis-benzazolyl compounds

The present invention provides a process for the preparation of a compound of formula (I) wherein Y represents —O—, —S— or —N(R2)—, R2 being hydrogen, C1-C10alkyl or aralkyl; Z represents a 2,5-furanyl, 2,5-thiophenyl, 4,4′-stilbenyl or a 1,2-ethyleny residue and R1 represents hydrogen, halogen, C1-C10alkoxyl, cyano, COOM or SO3M, M being hydrogen or an alkaline or alkaline earth metal, characterized by reacting a compound of formula (II) with a dicarboxylic acid of formula (III): HOOC-Z-COOH, or an ester thererof, Y, Z and R1 being as previously defined, in N-methylpyrrolidone or N,N-dimethylacetamide, in the presence of an acidic catalyst and, optionally, in the presence of a secondary solvent capable of removing water from the reaction mixture, which are useful as optical whitening agents for natural and synthetic materials.