CS193095B2 - Process for preparing 1,2-dihydroxycyclobuten 3,4-dione - Google Patents

Process for preparing 1,2-dihydroxycyclobuten 3,4-dione

Info

Publication number
CS193095B2
CS193095B2 CS773457A CS345777A CS193095B2 CS 193095 B2 CS193095 B2 CS 193095B2 CS 773457 A CS773457 A CS 773457A CS 345777 A CS345777 A CS 345777A CS 193095 B2 CS193095 B2 CS 193095B2
Authority
CS
Czechoslovakia
Prior art keywords
dihydroxycyclobuten
dione
preparing
Prior art date
Application number
CS773457A
Other languages
Czech (cs)
English (en)
Inventor
Manfred Schroeder
Wolfgang Schaefer
Original Assignee
Huels Chemische Werke 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 Huels Chemische Werke Ag filed Critical Huels Chemische Werke Ag
Publication of CS193095B2 publication Critical patent/CS193095B2/cs

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
    • C07C45/42—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by hydrolysis
    • C07C45/43—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by hydrolysis of >CX2 groups, X being halogen
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/587—Unsaturated compounds containing a keto groups being part of a ring
    • C07C49/703—Unsaturated compounds containing a keto groups being part of a ring containing hydroxy groups
    • C07C49/707—Unsaturated compounds containing a keto groups being part of a ring containing hydroxy groups a keto group being part of a three- to five-membered ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Steroid Compounds (AREA)
CS773457A 1976-05-28 1977-05-25 Process for preparing 1,2-dihydroxycyclobuten 3,4-dione CS193095B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2623836A DE2623836C3 (de) 1976-05-28 1976-05-28 Verfahren zur Herstellung von Quadratsäure

Publications (1)

Publication Number Publication Date
CS193095B2 true CS193095B2 (en) 1979-09-17

Family

ID=5979159

Family Applications (1)

Application Number Title Priority Date Filing Date
CS773457A CS193095B2 (en) 1976-05-28 1977-05-25 Process for preparing 1,2-dihydroxycyclobuten 3,4-dione

Country Status (19)

Country Link
US (1) US4097530A (de)
JP (1) JPS52148046A (de)
AT (1) AT349445B (de)
AU (1) AU502227B2 (de)
BE (1) BE855165A (de)
BR (1) BR7703445A (de)
CA (1) CA1075717A (de)
CH (1) CH629469A5 (de)
CS (1) CS193095B2 (de)
DD (1) DD129774A1 (de)
DE (1) DE2623836C3 (de)
DK (1) DK236677A (de)
FR (1) FR2352778A1 (de)
GB (1) GB1574500A (de)
IT (1) IT1079672B (de)
NL (1) NL7705890A (de)
NO (1) NO146278C (de)
SE (1) SE421787B (de)
SU (1) SU645549A3 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2810398C2 (de) * 1978-03-10 1983-08-25 Chemische Werke Hüls AG, 4370 Marl Verfahren zur Herstellung von Tetrachlorcyclobutenon aus Hexachlorcyclobuten
DE2824558C3 (de) * 1978-06-05 1981-07-09 Chemische Werke Hüls AG, 4370 Marl Verfahren zur Herstellung von Quadratsäure
DE3314431A1 (de) * 1983-04-21 1984-10-25 Chemische Werke Hüls AG, 4370 Marl Verfahren zur herstellung von quadratsaeure
US4508803A (en) * 1983-12-05 1985-04-02 Xerox Corporation Photoconductive devices containing novel benzyl fluorinated squaraine compositions
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
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
DE1253266B (de) * 1963-08-24 1967-11-02 Huels Chemische Werke Ag Verfahren zur Herstellung von Dioxocyclobutendiol
FR1404928A (fr) * 1963-08-24 1965-07-02 Huels Chemische Werke Ag Procédé de préparation du dicéto-cyclobutène-diol
BE786650A (fr) * 1971-07-24 1973-01-24 Ercoli Raffaele Procede de preparation de l'acide squarique

Also Published As

Publication number Publication date
AU2343377A (en) 1978-09-28
CA1075717A (en) 1980-04-15
DE2623836A1 (de) 1977-12-01
GB1574500A (en) 1980-09-10
SE421787B (sv) 1982-02-01
IT1079672B (it) 1985-05-13
AU502227B2 (en) 1979-07-19
US4097530A (en) 1978-06-27
FR2352778A1 (fr) 1977-12-23
BE855165A (fr) 1977-11-28
NO146278B (no) 1982-05-24
JPS52148046A (en) 1977-12-08
NL7705890A (nl) 1977-11-30
AT349445B (de) 1979-04-10
NO146278C (no) 1982-09-01
DK236677A (da) 1977-11-29
SU645549A3 (ru) 1979-01-30
BR7703445A (pt) 1978-02-28
SE7706262L (sv) 1977-11-29
DE2623836C3 (de) 1978-12-21
CH629469A5 (de) 1982-04-30
DD129774A1 (de) 1978-02-08
ATA377177A (de) 1978-09-15
DE2623836B2 (de) 1978-04-27
NO771871L (no) 1977-11-29
FR2352778B1 (de) 1980-07-25

Similar Documents

Publication Publication Date Title
YU279877A (en) Process for obtaining n,n'-methylene-bis-(o,o-diaryl-n-phosphono)-methyl-glycino-nitrile
JPS5365808A (en) Process for preparing propanee1*33diol diisubstituted at 22position
YU198877A (en) Process for preparing 2-cyclopropylamino-4,6-diamino-s-triazines
HU172528B (hu) Sposob poluchenija novykh proizvodnykh s 1,2-ditiol-3-tion gruppoj
IL52416A (en) Process for preparing 3 chlorocephalisporins
YU39804B (en) Process for obtaining new gona-4,9(10)-dienes
PT66891B (en) Process for the preparation of 1,5 disubstituted-2-pyrrolidones
HU174675B (hu) Sposob poluchenija indazolil-4-oksi-propanol-aminov
PT66743B (en) Process for preparing novel 2-oxy-5-isopropylidene-7-hydroxy-9-substituted-2,6-methano-3,4,5,6-tetrahydro-2h-1-benzoxocins
CS193095B2 (en) Process for preparing 1,2-dihydroxycyclobuten 3,4-dione
HU175611B (hu) Sposob poluchenija 3,5,5-trimetil-geksanoil-ferrocena
PT66206B (en) Process for preparing 2,9-dioxatricyclo/4,3,1,03,7/decanes
JPS52151105A (en) Process for preparing 1*11difluoroethylene
HU174318B (hu) Sposob poluchenija 2,4-diamino-5-/3',4',5'-trimetoksi-benzil/-pirimidina
YU39587B (en) Process for obtaining new 1,2,3-thiadiazole-5-yl-carbamides
YU298677A (en) Process for preparing 3,4-dideoxy-kanamycin b
HU173509B (hu) Sposob poluchenija proizvodnykh 1,2-benzo-tiazin-3-karboksamida
YU40813B (en) Process for obtaining 1-tert-butylamino-3-(2,5 dichlorophenoxio-2-propanoe
YU290176A (en) Process for preparing 4-dedimethylamino-4-arylsulfonamido-5a,6-anhydrotetracycline
CS193580B2 (en) Process for preparing 6a,10a-cis-hexahydrodibenzopyranones
CS190348B2 (en) Process for preparing 2,5-dihydroxybenzensulphates
YU49377A (en) Process for obtaining 5,6-dehydropenicillin
JPS5337604A (en) Process for preparing 1*11dichloroo1*33butadiene
CS182053B1 (en) Process for preparing 3,5-dinitro-o-toluamide
CS179833B1 (en) Process for preparing 2,5-dichloracetophenone