24849-02-3

Basic information

• Product Name: HEXAFLUORO-2,5-DIHYDROFURAN
• Synonyms: HEXAFLUORO-2,5-DIHYDROFURAN
• CAS NO: 24849-02-3
• Molecular Formula: C₄F₆O
• Molecular Weight: 178.03
• Mol File: 24849-02-3.mol
• Article Data: 3

Chemical Properties

• Appearance: /
• CAS DataBase Reference: HEXAFLUORO-2,5-DIHYDROFURAN(CAS DataBase Reference)
• NIST Chemistry Reference: HEXAFLUORO-2,5-DIHYDROFURAN(24849-02-3)
• EPA Substance Registry System: HEXAFLUORO-2,5-DIHYDROFURAN(24849-02-3)

Safety Data

• Hazardous Substances Data: 24849-02-3(Hazardous Substances Data)

Usage

General Description

HEXAFLUORO-2,5-DIHYDROFURAN is a chemical compound with the molecular formula C4H2F6O. It is a colorless, volatile liquid with a faint odor, and it is primarily used as a solvent and as a reagent in organic synthesis. HEXAFLUORO-2,5-DIHYDROFURAN is highly fluorinated, which gives it unique properties such as low flammability, high thermal stability, and resistance to chemical and biological degradation. It is commonly used in the semiconductor industry as a solvent for photoresist formulations and as a replacement for environmentally hazardous solvents. Its unique structure and properties make it a valuable compound in various industrial applications, including as a reaction medium in organic reactions and as a solvent for the extraction of lipids and oils.

Upstream product

• 65601-73-2 perfluoro(oxolane-2-yl-carbonylfluoride) 
• 80027-18-5 3,4-dibromo-2,2,5,5-tetrafluoro-2,5-dihydrofuran 

Downstream Products

• 669-78-3 difluoromaleic anhydride 
• 20377-93-9 cis-perfluoro-2-butenoyl-fluoride 

Relevant articles and documents

ULTRAVIOLET-PERMEABLE FLUOROPOLYMERS AND PELLICLES MADE BY USING THE SAME

A pellicle which is excellent in transmittance and durability against short wavelength light, and which can be used for photolithography by using e.g. a KrF excimer laser, is provided. A pellicle for exposure to a light having a wavelength of at most 200 nm, which comprises a frame and a pellicle membrane bonded to the frame by means of an adhesive, wherein the pellicle membrane and/or the adhesive comprises a polymer containing repeating units represented by the following formula (1): wherein Q represents a C1-3 polyfluoroalkylene group having a linear structure, or a group having at least one atom selected from hydrogen atoms and fluorine atoms in such a polyfluoroalkylene group substituted by a substituent comprising a polyfluoroalkyl group which may contain an ethereal oxygen atom, or the like, and X represents a hydrogen atom, a fluorine atom or a C1-3 polyfluoroalkyl group which may contain an ethereal oxygen atom.

PREPARATION OF SOME HIGHLY HALOGENATED DERIVATIVES OF FURAN

Direct chlorination of 2-(2H-hexafluoropropyl)-tetrahydrofuran 1 gave high yield of 2-(2-chlorohexafluoropropyl)-pentachloro-2,5-dihydrofuran 2.Bromination of 1 gave very complex mixture of products, from which three compounds, viz. 2-bromo-5-(2H-hexafluoropropyl)-furan 3, 3-bromo-5-(2Hhexafluoropropyl)-furan 4, and 2,4-dibromo-5-(2H-hexafluoropropyl)-furan 5 were isolated.Exchange fluorination of 2 with dry KF at 240 - 300 deg led to a stepwise substitution of fluorines for chlorines to give mixtures of chloro-fluoro-2-(2-chlorohexafluoropropyl)-dihydrofurans 7,8,9 and 10 together with small amounts of 2-(2-chlorohexafluoropropyl)-3,4,5-trichlorofuran 6.Exchange fluorination of 3,4-dihalo-2,2,5,5-tetrafluoro-2,5-dihydrofurans 11a and 11b led to a substitution of fluorine for one vinylic halogen to give 3-halo-2,2,4,5,5-pentafluoro-2,5-dihydrofurans 12a and 12b in good yields.Compounds 2 - 12 were characterized by n.m.r., m.s., and i.r. spectroscopy and elemental analysis.