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Description
TCI D3888 2,3-Difluorophenetole is an aromatic compound consisting of a benzene ring bearing an ethoxy group together with two adjacent fluorine atoms at the 2 and 3 positions. The compound is classified as a fluorinated building block, meaning an intermediate material used to introduce a fluorinated aromatic motif into more complex molecules. In the laboratory, materials of this type serve as the starting point for a range of ring functionalization reactions, from directed lithiation and nucleophilic aromatic substitution through to palladium-catalyzed cross-coupling reactions used to construct biaryl frameworks.
The principal property that makes this compound a preferred choice is its adjacent ortho-fluorination pattern. Two neighboring fluorine atoms create a distinctive dipole moment and polarizability anisotropy, a character much sought after in liquid crystal materials and organic electronic materials. At the same time, the fluorine atoms acidify the surrounding aromatic protons, allowing directed deprotonation with strong organometallic bases and opening a route to regioselective functionalization that is difficult to achieve on non-fluorinated arenes. The ethoxy group contributes electron density while also acting as a handle for further modification of the ring.
In Indonesian laboratories, a building block of this kind is typically used at the bench scale within synthetic organic chemistry and materials chemistry groups, in university research laboratories, and in the development units of industry. It is generally ordered in small quantities alongside the catalysts, bases, and anhydrous solvents required by the intended reaction, and is used step by step in route development work before any scale-up is considered.
Laboratory Applications
Fluorinated aromatic synthesis intermediate: the ring is pre-installed with two adjacent fluorine atoms, so the target fluorination pattern does not have to be built from scratch during the synthetic route.
Directed ortho-metalation studies: the fluorine substituents acidify neighboring aromatic protons, enabling clean regioselective deprotonation with strong organometallic bases and subsequent trapping with electrophiles.
Palladium-catalyzed cross-coupling work: after halogenation or metalation, the difluorinated arene can be carried into coupling reactions that build biaryl frameworks for more complex target molecules.
Nucleophilic aromatic substitution chemistry: the electron-poor character imparted by the adjacent fluorine atoms makes the ring a suitable substrate for displacement reactions at activated positions.
Liquid crystal and organic electronic materials research: the characteristic dipole moment and polarizability anisotropy of the ortho-difluoro motif are properties actively sought in these material classes.
Specifications
Brand: TCI
CAS number: 121219-07-6
Category: Chemistry > Building Blocks > Fluorinated Building Blocks
Chemical name: 2,3-Difluorophenetole
Pack sizes: research-scale laboratory pack sizes as offered in the TCI catalogue
Storage: keep in a tightly closed container, away from heat and direct sunlight
Handling and Storage
Store the container tightly closed in a cool, dry, and well-ventilated place, away from heat, open flame, direct sunlight, and incompatible reagents such as strong oxidizing agents. Keep the material in its original supplier container, or in a chemically compatible glass container with a well-sealing cap, and label it clearly. For moisture-sensitive downstream reactions, protect the contents from atmospheric moisture during transfer. Handle inside a fume hood using safety glasses, chemical-resistant gloves, and a laboratory coat, and avoid inhalation of vapors and contact with skin and eyes. Refer to the manufacturer's Safety Data Sheet before use, and dispose of residues and contaminated materials as chemical waste in line with institutional procedures.
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