GB872130A - Improvements in and relating to a process for preparing acetylsalicyclic acid anhydride - Google Patents

Improvements in and relating to a process for preparing acetylsalicyclic acid anhydride

Info

Publication number
GB872130A
GB872130A GB15081/60A GB1508160A GB872130A GB 872130 A GB872130 A GB 872130A GB 15081/60 A GB15081/60 A GB 15081/60A GB 1508160 A GB1508160 A GB 1508160A GB 872130 A GB872130 A GB 872130A
Authority
GB
United Kingdom
Prior art keywords
acetylsalicylic acid
acid anhydride
relating
preparing
acetylsalicyclic acid
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
GB15081/60A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB872130A publication Critical patent/GB872130A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/28—Preparation of carboxylic acid esters by modifying the hydroxylic moiety of the ester, such modification not being an introduction of an ester group
    • C07C67/29—Preparation of carboxylic acid esters by modifying the hydroxylic moiety of the ester, such modification not being an introduction of an ester group by introduction of oxygen-containing functional groups

Abstract

Acetylsalicylic acid anhydride is prepared by adding a solution of acetylsalicylic acid chloride in a water-soluble organic solvent to an aqueous solution of a salt of acetylsalicylic acid, prepared in situ from an aqueous suspension of acetylsalicylic acid; working up may be effected by washing the resulting precipitate of acetylsalicylic acid anhydride with an aqueous solution of an alkali-metal carbonate or bicarbonate, and acidifying the filtrates and washing liquors to recover unreacted acetylsalicylic acid and the acetylsalicylic acid formed in the course of the process.
GB15081/60A 1959-06-22 1960-04-29 Improvements in and relating to a process for preparing acetylsalicyclic acid anhydride Expired GB872130A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR872130X 1959-06-22

Publications (1)

Publication Number Publication Date
GB872130A true GB872130A (en) 1961-07-05

Family

ID=9358717

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15081/60A Expired GB872130A (en) 1959-06-22 1960-04-29 Improvements in and relating to a process for preparing acetylsalicyclic acid anhydride

Country Status (1)

Country Link
GB (1) GB872130A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996015809A2 (en) * 1994-11-22 1996-05-30 Laboratori Alchemia S.R.L. Process for the preparation of a pharmacologically active chemical combination
EP1461122A2 (en) * 2001-12-10 2004-09-29 Control Delivery Systems, Inc. Treatment of genitourinary tract disorders
WO2005009480A2 (en) * 2003-06-11 2005-02-03 Control Delivery Systems, Inc. Implants containing codrugs

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996015809A2 (en) * 1994-11-22 1996-05-30 Laboratori Alchemia S.R.L. Process for the preparation of a pharmacologically active chemical combination
WO1996015809A3 (en) * 1994-11-22 1996-10-17 Lab Alchemia Srl Process for the preparation of a pharmacologically active chemical combination
EP1038534A2 (en) * 1994-11-22 2000-09-27 Laboratori Alchemia S.R.L. Process for the preparation of a conjugate of pharmacologically active substances
EP1038534A3 (en) * 1994-11-22 2001-04-04 Laboratori Alchemia S.R.L. Process for the preparation of a conjugate of pharmacologically active substances
US6369260B1 (en) 1994-11-22 2002-04-09 Laboratori Alchemica S.R.L. Process for the preparation of a pharmacologically active chemical combination
EP1461122A2 (en) * 2001-12-10 2004-09-29 Control Delivery Systems, Inc. Treatment of genitourinary tract disorders
EP1461122A4 (en) * 2001-12-10 2006-08-23 Control Delivery Sys Inc Treatment of genitourinary tract disorders
WO2005009480A2 (en) * 2003-06-11 2005-02-03 Control Delivery Systems, Inc. Implants containing codrugs
WO2005009480A3 (en) * 2003-06-11 2005-07-14 Control Delivery Sys Inc Implants containing codrugs

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