DD53074A1 - Process for the preparation of cyclic ester anhydrides of alpha-hydroxycarboxylic acids - Google Patents

Process for the preparation of cyclic ester anhydrides of alpha-hydroxycarboxylic acids

Info

Publication number
DD53074A1
DD53074A1 DD11477665A DD11477665A DD53074A1 DD 53074 A1 DD53074 A1 DD 53074A1 DD 11477665 A DD11477665 A DD 11477665A DD 11477665 A DD11477665 A DD 11477665A DD 53074 A1 DD53074 A1 DD 53074A1
Authority
DD
German Democratic Republic
Prior art keywords
alpha
preparation
hydroxycarboxylic acids
cyclic ester
ester anhydrides
Prior art date
Application number
DD11477665A
Other languages
German (de)
Inventor
Peter Dr Andratschke
Christoph Dr Boxan
Walter Prof Dr Voss
Wilfried Dr Vetter
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 filed Critical
Priority to DD11477665A priority Critical patent/DD53074A1/en
Priority to AT954566A priority patent/AT266068B/en
Priority to BE688954D priority patent/BE688954A/fr
Priority to CH1632766A priority patent/CH484099A/en
Publication of DD53074A1 publication Critical patent/DD53074A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D319/00—Heterocyclic compounds containing six-membered rings having two oxygen atoms as the only ring hetero atoms
    • C07D319/10—1,4-Dioxanes; Hydrogenated 1,4-dioxanes
    • C07D319/12—1,4-Dioxanes; Hydrogenated 1,4-dioxanes not condensed with other rings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
  • Polyesters Or Polycarbonates (AREA)
DD11477665A 1965-12-18 1965-12-18 Process for the preparation of cyclic ester anhydrides of alpha-hydroxycarboxylic acids DD53074A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DD11477665A DD53074A1 (en) 1965-12-18 1965-12-18 Process for the preparation of cyclic ester anhydrides of alpha-hydroxycarboxylic acids
AT954566A AT266068B (en) 1965-12-18 1966-10-12 Process for the preparation of cyclic ester anhydrides of alpha-hydroxycarboxylic acids
BE688954D BE688954A (en) 1965-12-18 1966-10-27
CH1632766A CH484099A (en) 1965-12-18 1966-11-14 Process for the preparation of optionally substituted glycolides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD11477665A DD53074A1 (en) 1965-12-18 1965-12-18 Process for the preparation of cyclic ester anhydrides of alpha-hydroxycarboxylic acids

Publications (1)

Publication Number Publication Date
DD53074A1 true DD53074A1 (en) 1967-01-05

Family

ID=5478733

Family Applications (1)

Application Number Title Priority Date Filing Date
DD11477665A DD53074A1 (en) 1965-12-18 1965-12-18 Process for the preparation of cyclic ester anhydrides of alpha-hydroxycarboxylic acids

Country Status (3)

Country Link
AT (1) AT266068B (en)
CH (1) CH484099A (en)
DD (1) DD53074A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0264926A2 (en) * 1986-10-24 1988-04-27 Boehringer Ingelheim Kg Process for the preparation and purification of thermally instable compounds
US5319107A (en) 1990-09-18 1994-06-07 Biopak Technology, Ltd. Method to produce cyclic esters
US5332839A (en) * 1990-09-18 1994-07-26 Biopak Technology, Ltd. Catalytic production of lactide directly from lactic acid
US5420304A (en) * 1992-03-19 1995-05-30 Biopak Technology, Ltd. Method to produce cyclic esters
US5856523A (en) * 1992-03-19 1999-01-05 Chronopol, Inc. Purifying cyclic esters by aqueous solvent extraction and further purification

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2547267C3 (en) 1975-10-22 1979-05-03 Chemische Werke Huels Ag, 4370 Marl Process for the preparation of cyclic diesters of dodecanedioic acid

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0264926A2 (en) * 1986-10-24 1988-04-27 Boehringer Ingelheim Kg Process for the preparation and purification of thermally instable compounds
US5319107A (en) 1990-09-18 1994-06-07 Biopak Technology, Ltd. Method to produce cyclic esters
US5332839A (en) * 1990-09-18 1994-07-26 Biopak Technology, Ltd. Catalytic production of lactide directly from lactic acid
US5420304A (en) * 1992-03-19 1995-05-30 Biopak Technology, Ltd. Method to produce cyclic esters
US5856523A (en) * 1992-03-19 1999-01-05 Chronopol, Inc. Purifying cyclic esters by aqueous solvent extraction and further purification

Also Published As

Publication number Publication date
AT266068B (en) 1968-11-11
CH484099A (en) 1970-01-15

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