CA1071237A - Synthesis of squaric acid - Google Patents

Synthesis of squaric acid

Info

Publication number
CA1071237A
CA1071237A CA278,889A CA278889A CA1071237A CA 1071237 A CA1071237 A CA 1071237A CA 278889 A CA278889 A CA 278889A CA 1071237 A CA1071237 A CA 1071237A
Authority
CA
Canada
Prior art keywords
cyclobuten
morpholine
morpholinotrichloro
reaction
aromatic hydrocarbon
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
CA278,889A
Other languages
English (en)
French (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
Application granted granted Critical
Publication of CA1071237A publication Critical patent/CA1071237A/en
Expired 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)
CA278,889A 1976-06-21 1977-05-20 Synthesis of squaric acid Expired CA1071237A (en)

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 (1)

Publication Number Publication Date
CA1071237A true CA1071237A (en) 1980-02-05

Family

ID=24805971

Family Applications (1)

Application Number Title Priority Date Filing Date
CA278,889A Expired CA1071237A (en) 1976-06-21 1977-05-20 Synthesis of squaric acid

Country Status (5)

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

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
EP1257812B1 (en) * 1999-11-30 2009-04-01 Electric Power Research Institute Method for the photometric detection of ions using capillary electrophoresis probes, method for the manufacturing and usage of said probes

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
US4104308A (en) 1978-08-01
GB1515488A (en) 1978-06-28
FR2355795A1 (fr) 1978-01-20
JPS52156836A (en) 1977-12-27
FR2355795B1 (OSRAM) 1980-03-28

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