Process for preparing cyclic ethers

Details Process for preparing cyclic ethers Process for preparing cyclic ethers

1977-03-07

1978-06-13

Raymond, Richard L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D30708

Patent

active

040948870

ABSTRACT:
This invention relates to a process for preparing tetrahydrofuran or dihydrofuran by reacting an acetic acid ester of 1,4-butanediol or 1,4-dihydroxybutene-2 and water in the presence of an acid catalyst with a high yield. The process is characterized in that the reaction is carried out in two separate reaction zone in combination with a plurality of distilling columns and a part of reaction product is recycled to a predetermined position of the reaction zone.

REFERENCES:
patent: 4005112 (1977-01-01), Smith
patent: 4005113 (1977-01-01), Smith
patent: 4010171 (1977-03-01), Smith
patent: 4011244 (1977-03-01), Smith

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