443-30-1

Basic information

• Product Name: N,N-Dimethyl-4-[(1H-inden-1-ylidene)methyl]benzenamine
• Synonyms: 4-[(1H-Inden-1-ylidene)methyl]-N,N-dimethylbenzen-1-amine;DABI;N,N-Dimethyl-4-[(1H-inden-1-ylidene)methyl]benzenamine;NSC-80087;4-((1H-Inden-1-ylidene)Methyl)-N,N-diMethylaniline
• CAS NO: 443-30-1
• Molecular Formula: C₁₈H₁₇N
• Molecular Weight: 247.36
• Mol File: 443-30-1.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 380.38°C (rough estimate)
• Flash Point: 165.4°C
• Appearance: /
• Density: 0.8780 (rough estimate)
• Vapor Pressure: 6.33E-07mmHg at 25°C
• Refractive Index: 1.3530 (estimate)
• CAS DataBase Reference: N,N-Dimethyl-4-[(1H-inden-1-ylidene)methyl]benzenamine(CAS DataBase Reference)
• NIST Chemistry Reference: N,N-Dimethyl-4-[(1H-inden-1-ylidene)methyl]benzenamine(443-30-1)
• EPA Substance Registry System: N,N-Dimethyl-4-[(1H-inden-1-ylidene)methyl]benzenamine(443-30-1)

Safety Data

• Hazardous Substances Data: 443-30-1(Hazardous Substances Data)

Usage

General Description

N,N-Dimethyl-4-[(1H-inden-1-ylidene)methyl]benzenamine, also known as DIMB, is a chemical compound with the molecular formula C19H19N. It is a yellow-orange crystalline powder that is commonly used as a photoinitiator in the production of polymer materials, particularly in the manufacturing of coatings, inks, and adhesives. DIMB is known for its ability to efficiently initiate the polymerization process when exposed to ultraviolet light, making it a valuable tool in the development of photopolymer materials. It is also used in the formulation of dental and medical adhesives and can act as a photostabilizer for various products. However, it is important to handle this chemical with care, as it can be harmful if ingested, inhaled, or in contact with the skin.

InChI:InChI=1/C18H17N/c1-19(2)17-11-7-14(8-12-17)13-16-10-9-15-5-3-4-6-18(15)16/h3-13H,1-2H3

Upstream product

• 10136-84-2 Indenyl-⁽³⁾-magnesiumbromid 
• 100-10-7 4-dimethylamino-benzaldehyde 
• 95-13-6 1-indene 

Relevant articles and documents

A Rapid and Highly Efficient Method for the Synthesis of Benzofulvenes via CsOH-Catalyzed Condensation of Indene and Aldehydes

A fast condensation of indene with a wide range of aldehydes catalyzed by cesium hydroxide monohydrate (CsOH·H2O) for the synthesis of benzofulvenes with good to excellent yields was demonstrated. The condensation can be completed within a few minutes under room temperature and air atmosphere without the use of special ligands or phase-transfer catalysts. In addition, the ratio of indene to aldehydes played an important role in this reaction. The single condensation products 3 can be obtained as main products with a ratio of 1.2:1, whereas the double condensation products 4 can be obtained by changing the ratio to 1:2.2. This protocol provides an efficient, simple and general method for the synthesis of benzofulvenes 3 and double condensation products 4, which are important intermediates in the synthesis of numerous drugs and natural products.

KF-Al2O3 induced condensations of indene with aromatic aldehydes

In the presence of KF-Al2O3 as a solid catalyst, indene reacted with aromatic aldehydes 2a-c (R=4-Me, 4-MeO, 4-Me2N) to yield mainly benzofulvenes 3a-c (45%-66%), while when treated with two molar of aromatic aldehydes 2d-