GB1196500A - Production of Tetrahydrofuran-2,3,4,5-Tetracarboxylic Acid Dianhydride - Google Patents

Production of Tetrahydrofuran-2,3,4,5-Tetracarboxylic Acid Dianhydride

Info

Publication number
GB1196500A
GB1196500A GB6009968A GB6009968A GB1196500A GB 1196500 A GB1196500 A GB 1196500A GB 6009968 A GB6009968 A GB 6009968A GB 6009968 A GB6009968 A GB 6009968A GB 1196500 A GB1196500 A GB 1196500A
Authority
GB
United Kingdom
Prior art keywords
tetrahydrofuran
production
tetracarboxylic acid
acid dianhydride
acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB6009968A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gelsenberg Benzin AG
Original Assignee
Gelsenberg Benzin AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gelsenberg Benzin AG filed Critical Gelsenberg Benzin AG
Publication of GB1196500A publication Critical patent/GB1196500A/en
Expired legal-status Critical Current

Links

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)

Abstract

1,196,500. Tetrahydrofuran - 2,3,4,5 - tetracarboxylic dianhydride. GELSENBERG BENZIN A.G. 18 Dec., 1968 [22 Dec., 1967], No. 60099/68. Addition to 1,178,668. Heading C2C. The novel compound tetrahydrofuran-2,3,4,5- tetracarboxylic dianhydride of the formula is obtained by dehydration of the corresponding acid (tetrahydrofuran - 2,3,4,5 - tetracarboxylic acid) by treatment with acetic anhydride at elevated temperature, optionally in the presence of an inert solvent, e.g. an aromatic hydrocarbon. It is preferred to use more than 2 mols of the anhydride per mol of the acid.
GB6009968A 1967-07-07 1968-12-18 Production of Tetrahydrofuran-2,3,4,5-Tetracarboxylic Acid Dianhydride Expired GB1196500A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEG0050576 1967-07-07
DE1643407 1967-12-22

Publications (1)

Publication Number Publication Date
GB1196500A true GB1196500A (en) 1970-06-24

Family

ID=35149008

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3223368A Expired GB1178648A (en) 1967-07-07 1968-07-08 Process for the Production of Tetrahydrofuran Tetracarboxylic Acid
GB6009968A Expired GB1196500A (en) 1967-07-07 1968-12-18 Production of Tetrahydrofuran-2,3,4,5-Tetracarboxylic Acid Dianhydride

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB3223368A Expired GB1178648A (en) 1967-07-07 1968-07-08 Process for the Production of Tetrahydrofuran Tetracarboxylic Acid

Country Status (1)

Country Link
GB (2) GB1178648A (en)

Also Published As

Publication number Publication date
GB1178648A (en) 1970-01-21

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees