Coumarone

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Related to benzofuran: Benzothiophene

coumarone

[′kü·mə‚rōn]
(organic chemistry)
C8H6O A colorless liquid, boiling point 169°C.

Coumarone

 

(also benzofuran), a colorless liquid with a characteristic odor. Melting point, — 28.5°C; boiling point, 170.9°C; density, 1.091 g/cm3 at 20°C; refractive index, nD22.7, 1.5645. It has the following structural formula:

Coumarone is soluble in common organic solvents but is insoluble in water. It is resistant to the action of alkalis and resinifies in the presence of sulfuric acid. Coumarone is contained in coal tar, but it can also be synthesized, for example, by heating o-hydroxy-²-chlorostyrene, HOC6H4CH = CHCl, with an alkali. Products obtained from the copolymerization of coumarone with indene (coumarone-indene resins) are used in industry.

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The structure of BOEMA, which is a novel methacrylate monomer containing benzofuran side group, was characterized by Fourier transform infrared spectrophotometer (FTIR), (1) H-NMR, and (13) C-NMR techniques.
was determined by sodium-binding benzofuran isophthalate (SBFI) fluorescence measurement as described previously (Cao et al.
Two nowel cytotoxic benzofuran derivatives from Brazilian propolis.
major Benzofuran, 6-benzoyl-2- Oxygen heterocycle L.
The main oxygen-containing compounds identified are phenols, diphenols, 2-, 3- and 4-alkanones, furans and benzofurans.
Within each skeletal group, compounds are ordered into hydrocarbons, acids, aldehydes, ketones, alcohols, esters, ethers, chlorinated compounds, benzofurans, benzopyrans, and nitrogen-containing compounds.
Similar results have been reported in response to a number of preemergence herbicide families including the benzofurans, and diamino-s-triazines (Harper, 1982; Callahan, 1994) and the dinitroanilines (Seagle, 1978; Finney, 1991; Callahan, 1994).
3 Furans and Benzofurans, Kap-Sun Yeung, Zhen Yang, Xiao-Shui Peng and Xue-Long Hou Ch.
Liu, Design, Synthesis and Structure-Activity Relationship of Novel Oxime Ether Strobilurin Derivatives Containing Substituted Benzofurans.