40341-04-6

Basic information

• Product Name: RABENZAZOLE
• Synonyms: 2-(3,5-DIMETHYL-1H-PYRAZOL-1-YL)-1H-BENZIMIDAZOLE;RABENZAZOL;RABENZAZOLE;1-benzimidazolyl-3,5-dimethylpyrazole;2-(3,5-dimethyl-1h-pyrazol-1-yl)-1h-benzimidazol;2-(3,5-dimethyl-1-pyrazolyl)-benzimidazol;2-(3,5-dimethyl-1-pyrazolyl)benzimidazole;RABENZAZOL PESTANAL (1-BENZIMIDAZOL-YL-3
• CAS NO: 40341-04-6
• Molecular Formula: C₁₂H₁₂N₄
• Molecular Weight: 212.25
• EINECS: 254-882-9
• Mol File: 40341-04-6.mol
• Article Data: 5

Chemical Properties

• Melting Point: 134-136 °C(Solv: methanol (67-56-1); water (7732-18-5))
• Boiling Point: 443.8 °C at 760 mmHg
• Flash Point: 100 °C
• Appearance: /
• Density: 1.29 g/cm³
• Vapor Pressure: 4.51E-08mmHg at 25°C
• Refractive Index: 1.696
• Storage Temp.: APPROX 4°C
• PKA: 10.63±0.10(Predicted)
• CAS DataBase Reference: RABENZAZOLE(CAS DataBase Reference)
• NIST Chemistry Reference: RABENZAZOLE(40341-04-6)
• EPA Substance Registry System: RABENZAZOLE(40341-04-6)

Safety Data

• Safety Statements: 22-24/25
• RTECS: DD8780000
• Hazardous Substances Data: 40341-04-6(Hazardous Substances Data)

Usage

Uses

Rabenzazol is a pyrazole fungicide used to treat plants and vegetables. Pesticide component.

InChI:InChI=1/C12H12N4/c1-8-7-9(2)16(15-8)12-13-10-5-3-4-6-11(10)14-12/h3-7H,1-2H3,(H,13,14)

Upstream product

• 15108-18-6 2-hydrazinobenzimidazole 
• 123-54-6 acetylacetone 
• 1616615-70-3 1-amino-2-(3,5-dimethylpyrazol-1-yl)benzimidazole 
• 139883-61-7 1-amino-2-hydrazinobenzimidazole 
• 120341-04-0 1-aminobenzimidazole-2-sulfonic acid 

Relevant articles and documents

Condensed Imidazo-1,2,4-triazines. 7. Reaction of 2-Hydrazinobenz(naphth)imidazoles with Acetylacetone

Hetaryl analogs of biphenyl, viz., 2-(3',5'-dimethyl-1'-pyrazolyl)benz(naphth)imidazoles, were obtained instead of the expected benz(naphth)imidazo-1,2,4-triazepines in the condensation of 2-hydrazinobenz(naphth)imidazoles with acetylacetone.The structure of the final products was established on the basis of the PMR and mass spectra and by the data from the x-ray diffraction analysis.

Reaction of 2-hydrazinobenzimidazole with β-diketones: A structural reinvestigation

The reaction of 2-hydrazinobenzimidazole (1) with pentane-2,4-dione yields a pyrazole derivative (2) instead of the reported triazepine (3).Several 2-pyrazolylbenzimidazoles (4) have similarly been synthesized using unsymmetrical β-diketones and their precursors.It has been shown that 1H NMR spectroscopy can easily distinguish the isomeric pairs.

Condensation and Cyclization of 2-Hydrazinobenzimidazole, -benzoxazole, and -benzothiazole

2-Hydrazinobenzoxazole (1), -benzimidazole (2), and -benzothiazole (3) were condensed with ethyl chloroformate and/or diethyl oxalate to produce 1,2,4-triazolo- and 1,2,4-triazino-fused ketones of the title azoles respectively.Condensation of 1 and 2 with aromatic aldehydes and/or acetic anhydride produced, 3-aryl- and 3-methyl-substituted 1,2,4-triazolo-fused azoles respectively.The hydrazines 1 and 2 cyclized with acetylacetone to produce the corresponding 2-(1-pyrazolyl) derivatives. 2-Acetylthiazolobenzimidazole reacted with hydroxylamine and/or alkylamines, to produce the corresponding condensation products.Also, it condensed with aromatic aldehydes to give the chalcones.When reacted with benzenediazonium salt, it gave the corresponding 2-arylazo-substituted compounds.