GB1205839A - A method of manufacture of 1 cis, 2 cis, 3 cis, 4 cis, cyclopentane-tetracarboxylic acid and its dianhydride - Google Patents

A method of manufacture of 1 cis, 2 cis, 3 cis, 4 cis, cyclopentane-tetracarboxylic acid and its dianhydride

Info

Publication number
GB1205839A
GB1205839A GB4375368A GB4375368A GB1205839A GB 1205839 A GB1205839 A GB 1205839A GB 4375368 A GB4375368 A GB 4375368A GB 4375368 A GB4375368 A GB 4375368A GB 1205839 A GB1205839 A GB 1205839A
Authority
GB
United Kingdom
Prior art keywords
cis
tetracarboxylic acid
hno
acid
cyclopentane
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
GB4375368A
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.)
Orkem SA
Original Assignee
Chimique des Charbonnages SA
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 Chimique des Charbonnages SA filed Critical Chimique des Charbonnages SA
Publication of GB1205839A publication Critical patent/GB1205839A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/31—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting
    • C07C51/316—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting with oxides of nitrogen or nitrogen-containing mineral acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Furan Compounds (AREA)

Abstract

1,205,839. 1-Cis, 2-cis, 3-cis,4-cis cyclopentane tetracarboxylic acid. SOC. CHIMIQUE DES CHARBONNAGES. 13 Sept., 1968 [14 Sept., 1967], No. 43753/68. Heading C2C. A process for the preparation of 1-cis, 2-cis, 3-cis, 4-cis cyclopentane tetracarboxylic acid by nitric acid oxidation of endo-methylene 3,6- tetrahydro-1,2,3,6-phthalic anhydride or of the corresponding acid is characterized by the following reaction conditions: (a) the concentration of HNO 3 is 65-70%, (b) the molar ratio of HNO 3 to the phthalic anhydride or acid is from 10 to 20, (c) the temperature of the reaction is from 30‹ to 60‹ C., (d) the reaction time is greater than 12 hours, preferably 24 to 48 hours and (e) the crystals of the product are separated from the mother liquor and are washed with conc. HNO 3 (50-70%).
GB4375368A 1967-09-14 1968-09-13 A method of manufacture of 1 cis, 2 cis, 3 cis, 4 cis, cyclopentane-tetracarboxylic acid and its dianhydride Expired GB1205839A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR121057 1967-09-14

Publications (1)

Publication Number Publication Date
GB1205839A true GB1205839A (en) 1970-09-16

Family

ID=8638350

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4375368A Expired GB1205839A (en) 1967-09-14 1968-09-13 A method of manufacture of 1 cis, 2 cis, 3 cis, 4 cis, cyclopentane-tetracarboxylic acid and its dianhydride

Country Status (7)

Country Link
BE (1) BE720180A (en)
CH (1) CH487825A (en)
DE (1) DE1793414A1 (en)
ES (1) ES358157A1 (en)
FR (1) FR1555625A (en)
GB (1) GB1205839A (en)
NL (1) NL6813115A (en)

Also Published As

Publication number Publication date
ES358157A1 (en) 1970-04-16
NL6813115A (en) 1969-03-18
CH487825A (en) 1970-03-31
BE720180A (en) 1969-02-28
FR1555625A (en) 1969-01-31
DE1793414A1 (en) 1972-02-10

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee