Preparation of furan compounds

Details Preparation of furan compounds Preparation of furan compounds

1978-08-21

1979-10-30

Raymond, Richard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252441, C07D30736

Patent

active

041728386

ABSTRACT:
A process for preparing a furan compound by the catalytic oxidation of a diolefin such as butadiene or a halo-substituted alkene is provided. In this process the starting material is contacted with an aqueous medium having a pH less than about 2 containing (1) iodide ion, (2) a mixture of cuprous and cupric ions, and (3) a solubilizing agent for cuprous ion such as an alkali metal halide. Optionally, an oxygen-containing gas such as air can also be contacted with the aqueous medium. In one embodiment, the starting material is contacted with an aqueous solution of the aforesaid ingredients in one reaction zone to prepare furan and a portion of the solution is passed to a second reaction zone where curpous ion is oxidized to cupric ion with air and then the air-treated solution returned to the first reaction zone.

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