2-[(1E)-2-(2-Furanyl)ethenyl]-4,6-bis(trichloromethyl)-1,3,5-triazine
[CAS 159266-22-5]

Identification

• Classification: Organic raw materials >> Heterocyclic compound >> Triazines
• Name: 2-[(1E)-2-(2-Furanyl)ethenyl]-4,6-bis(trichloromethyl)-1,3,5-triazine
• Molecular Formula: C₁₁H₅Cl₆N₃O
• Molecular Weight: 407.89
• CAS Registry Number: 159266-22-5
• EC Number: 605-181-5
• SMILES: C1=COC(=C1)/C=C/C2=NC(=NC(=N2)C(Cl)(Cl)Cl)C(Cl)(Cl)Cl

Properties

• Solubility: Practically insoluble (0.018 g/L) (25 °C), Calc.^*
• Density: 1.715±0.06 g/cm³ (20 °C 760 Torr), Calc.^*
• Melting point: 142 °C (Expl.)
• Boiling point: 445.9±55.0 °C 760 mmHg (Calc.)^*
• Flash point: 223.5±31.5 °C (Calc.)^*
• Index of refraction: 1.665 (Calc.)^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software.

chemBlink Chemical Story

The long name of this compound describes two connected design elements: a furanylvinyl light-absorbing framework and a 1,3,5-triazine ring bearing two trichloromethyl groups. The registry entry for CAS 159266-22-5 specifies the E arrangement of the connecting alkene. This geometrical detail belongs to the substance's identity and should be retained when comparing it with references that give only a generic furanylvinyl-triazine name.

Its chemical context is the development of light-sensitive organic materials. Halogenated triazines appear in patent literature among compounds considered for generating acid or initiating light-driven changes in resin formulations. For example, patent TWI679231B lists a 2-furanylvinyl bis(trichloromethyl)triazine among candidate halogen-containing components. That is documentary support for interest in the corresponding structural motif. A candidate list without a stereochemical designation is not, by itself, an experimental demonstration of the performance of the exact E isomer registered here.

The structure nevertheless provides a meaningful chemical explanation of the design. The furan ring and connecting carbon-carbon double bond create a conjugated path to the triazine framework. Changing this light-absorbing portion can change the electronic states available on illumination. The carbon-chlorine-rich substituents provide a different part of the design, associated with the photoreactivity of this compound family. Absorption, formation of reactive products and a useful change in a polymer film are distinct stages, and success at one stage does not establish success at all three.

Available public evidence reviewed here does not establish an exact-isomer absorption maximum, quantum yield, commercial formulation or discovery history. Those omissions limit the story to verified identity, structural interpretation and carefully qualified patent context. In particular, no universal exposure wavelength or industrial performance is assigned to this CAS.

References:
1. ECHA. Pre-registered substances: 1,3,5-triazine, 2-[(1E)-2-(2-furanyl)ethenyl]-4,6-bis(trichloromethyl)-; CAS 159266-22-5; EC/List 605-181-5. https://poisoncentres.echa.europa.eu/information-on-chemicals/pre-registered-substances
2. Tokyo Ohka Kogyo. Photosensitive resin composition, pattern forming method, cured film, insulating film, color filter, and display device. Patent TWI679231B, published 2019-12-11. https://patents.google.com/patent/TWI679231B/en