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FR2355795A1 - Procede de synthese de l'acide squarique - Google Patents

Procede de synthese de l'acide squarique

Info

Publication number
FR2355795A1
FR2355795A1 FR7714012A FR7714012A FR2355795A1 FR 2355795 A1 FR2355795 A1 FR 2355795A1 FR 7714012 A FR7714012 A FR 7714012A FR 7714012 A FR7714012 A FR 7714012A FR 2355795 A1 FR2355795 A1 FR 2355795A1
Authority
FR
France
Prior art keywords
cyclobutene
synthesis process
acid synthesis
squaric acid
morpholinotrichloro
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.)
Granted
Application number
FR7714012A
Other languages
English (en)
Other versions
FR2355795B1 (fr
Inventor
Thomas R Gadek
David B Sclove
Robert L Vollmer
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of FR2355795A1 publication Critical patent/FR2355795A1/fr
Application granted granted Critical
Publication of FR2355795B1 publication Critical patent/FR2355795B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/56—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Procédé de préparation du 3,4-dihydroxy-3-cyclobutène-1,2-dione caractérisé en ce qu'il comprend les étapes suivantes : a. une réaction entre de l'hexachlorobutadiène et de la morpholine en excès; b. la transformation du 1,1,3-trichloro-2,4,4-trimorpholino-butadiène ainsi obtenu en 3-morpholinotrichloro-2-cyclobutène-1-one; c. l'hydrolyse du 3-morpholinotrichloro-2-cyclobutène- 1-one en 3,4-dihydroxy-3-cyclobutène-1,2 dione, la réaction entre l'hexachlorobutadiène et la morpholine étant réalisée en présence d'un hydrocarbure aromatique et en maintenant la température entre 110 degrés C et 120 degrés C.
FR7714012A 1976-06-21 1977-05-03 Procede de synthese de l'acide squarique Granted FR2355795A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/698,614 US4104308A (en) 1976-06-21 1976-06-21 Synthesis of squaric acid

Publications (2)

Publication Number Publication Date
FR2355795A1 true FR2355795A1 (fr) 1978-01-20
FR2355795B1 FR2355795B1 (fr) 1980-03-28

Family

ID=24805971

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7714012A Granted FR2355795A1 (fr) 1976-06-21 1977-05-03 Procede de synthese de l'acide squarique

Country Status (5)

Country Link
US (1) US4104308A (fr)
JP (1) JPS52156836A (fr)
CA (1) CA1071237A (fr)
FR (1) FR2355795A1 (fr)
GB (1) GB1515488A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3314431A1 (de) * 1983-04-21 1984-10-25 Chemische Werke Hüls AG, 4370 Marl Verfahren zur herstellung von quadratsaeure
US4585884A (en) * 1984-05-23 1986-04-29 Xerox Corporation Silylated compositions, and deuterated hydroxyl squaraine compositions and processes
IE64516B1 (en) * 1990-02-12 1995-08-09 Lonza Ag A process for the preparation of quadratic acid
IE65907B1 (en) * 1990-02-26 1995-11-29 Lonza Ag New 3-hydroxy-2-cyclobuten-1-one salts their preparation and use
JPH0868935A (ja) * 1994-06-24 1996-03-12 Konica Corp トリプレットレンズを有するカメラ
ATE427482T1 (de) * 1999-11-30 2009-04-15 Electric Power Res Inst Methode zur photometrischen detektion von ionen mittels kapillar-elektrophoresesonden, verfahren zur herstellung und verwendung der sonden

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059030A (en) * 1959-06-15 1962-10-16 Minnesota Mining & Mfg Diketocyclobutenediol and alkali metal salts thereof
DE1568291A1 (de) * 1966-06-03 1970-03-05 Huels Chemische Werke Ag Verfahren zur Herstellung von 1,2-Dihydroxy-cyclobutendion
BE786650A (fr) * 1971-07-24 1973-01-24 Ercoli Raffaele Procede de preparation de l'acide squarique

Also Published As

Publication number Publication date
FR2355795B1 (fr) 1980-03-28
GB1515488A (en) 1978-06-28
CA1071237A (fr) 1980-02-05
JPS52156836A (en) 1977-12-27
US4104308A (en) 1978-08-01

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Legal Events

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