1904-64-9

Basic information

• Product Name: Quinazoline, 3,4-dihydro-
• CAS NO: 1904-64-9
• Molecular Formula: C8H8N2
• Molecular Weight: 132.165
• Mol File: 1904-64-9.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: Quinazoline, 3,4-dihydro-(CAS DataBase Reference)
• NIST Chemistry Reference: Quinazoline, 3,4-dihydro-(1904-64-9)
• EPA Substance Registry System: Quinazoline, 3,4-dihydro-(1904-64-9)

Safety Data

• Hazardous Substances Data: 1904-64-9(Hazardous Substances Data)

Upstream product

• 253-82-7 quinazoline 
• 124-38-9 carbon dioxide 
• 4403-69-4 2-amino-1-benzylamine 

Downstream Products

• 177202-64-1 N-(2-aminobenzyl)formamide 
• 881404-69-9 3-[(E)-3-(2-chlorophenyl)allyl]-3,4-dihydroquinazoline 
• 1419176-81-0 C₂₂H₂₁N₂⁽¹⁺⁾*Br^(1-) 
• 1419176-88-7 C₂₂H₂₀N₂Se 
• 1419176-86-5 C₂₂H₂₀N₂S 
• 1419176-84-3 C₂₂H₂₁N₂⁽¹⁺⁾*F₆P^(1-) 
• 881404-62-2 2-methyl-1,2,3,9-tetrahydropyrrolo<2,1-b>quinazoline 
• 113010-17-6 2-(1,2,3,9-tetrahydropyrrolo<2,1-b>quinazolin-3-yl)benzenamine 
• 881404-70-2 3-(2-chlorophenyl)-1,2,3,9-tetrahydropyrrolo[2,1-b]quinazoline 
• 25855-20-3 2-phenylquinazoline 
• 1904-65-0 1,2,3,4-tetrahydroquinazoline 
• 253-82-7 quinazoline 

Relevant articles and documents

Cu@U-g-C3N4 Catalyzed Cyclization of o-Phenylenediamines for the Synthesis of Benzimidazoles by Using CO2 and Dimethylamine Borane as a Hydrogen Source

Abstract: This work reports a green and sustainable route for the synthesis of benzimidazoles via C–N bond formation using carbon dioxide (CO2) as a C1 carbon source. In this work, Cu@U-g-C3N4 catalyst was prepared from urea derived porous graphitic carbon?nitride (U-g-C3N4) and CuCl2 and characterized by FT-IR, XRD, XPS, SEM, TPD etc. The Cu@U-g-C3N4 as a heterogeneous recyclable catalyst has been employed first time for the cyclization of o-phenylenediamines (OPD) with CO2 to benzimidazoles using dimethylamine borane (DMAB). The proposed protocol becomes sustainable and efficient due to the use of propylene carbonate/water as a suitable biodegradable, economical and environmentally benign solvent system. The proposed catalytic system showed a wide range of substrate scope for the synthesis of benzimidazoles in good to excellent yields. Graphical Abstract: [Figure not available: see fulltext.]