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GB1240207A - PROCESS FOR THE PREPARATION OF beta-LACTAMS - Google Patents

PROCESS FOR THE PREPARATION OF beta-LACTAMS

Info

Publication number
GB1240207A
GB1240207A GB4182669A GB4182669A GB1240207A GB 1240207 A GB1240207 A GB 1240207A GB 4182669 A GB4182669 A GB 4182669A GB 4182669 A GB4182669 A GB 4182669A GB 1240207 A GB1240207 A GB 1240207A
Authority
GB
United Kingdom
Prior art keywords
lactams
hydrocarbyl
aug
beta
preparation
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
GB4182669A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst 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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB1240207A publication Critical patent/GB1240207A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D201/00Preparation, separation, purification or stabilisation of unsubstituted lactams
    • C07D201/02Preparation of lactams
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D205/00Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom
    • C07D205/02Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom not condensed with other rings
    • C07D205/06Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
    • C07D205/08Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with one oxygen atom directly attached in position 2, e.g. beta-lactams

Landscapes

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

Abstract

1,240,207. # - Lactams. FARBWERKE HOECHST A:G. 21 Aug., 1969;[21 Aug., 1968], No. 418261/69. Heading C2C. # - Lactams of formula where R is C 1-2 substituted or unsubstituted hydrocarbyl, R<SP>1</SP>, R<SP>11</SP> and R<SP>111</SP> are H or C 1- 5 hydrocarbyl or two of R, R<SP>1</SP>., R<SP>11</SP> and R<SP>111</SP> are H or C 1-5 hydrocarbyl or two of R, R<SP>1</SP>, R<SP>11</SP> and R<SP>111</SP> may form a carbocyclic ring, are prepared by hydrolysing at a pH of 1-12 the corresponding # - lactam - N - sulphochloride in an aqueous phase in the presence of a catalytic amount of an oxyacid of sulphur which is a reducing agent, or a salt thereof, and neutralizing the acid produced. Suitable reducing agents are sulphurous, dithionous and pyrosulphurous acids and salts thereof, and neutralization may be effected with NH 3 or an alkali metal hydroxide, carbonate or bicarbonate. A solvent may be -used. Examples prepare 4 - phenyl-, 4 - methyl- and 4,4 - dimethylazetidinones - (2). Reference has been directed by the Comptroller to Specification 913,644.
GB4182669A 1968-08-21 1969-08-21 PROCESS FOR THE PREPARATION OF beta-LACTAMS Expired GB1240207A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681795190 DE1795190B1 (en) 1968-08-21 1968-08-21 Process for the production of ss-lactams

Publications (1)

Publication Number Publication Date
GB1240207A true GB1240207A (en) 1971-07-21

Family

ID=5708091

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4182669A Expired GB1240207A (en) 1968-08-21 1969-08-21 PROCESS FOR THE PREPARATION OF beta-LACTAMS

Country Status (8)

Country Link
AT (1) AT292655B (en)
BE (1) BE737781A (en)
BR (1) BR6911783D0 (en)
CH (1) CH520137A (en)
DE (1) DE1795190B1 (en)
FR (1) FR2016990A1 (en)
GB (1) GB1240207A (en)
NL (1) NL6912465A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1086234B (en) * 1958-03-22 1960-08-04 Hoechst Ag Process for the production of ª ‰ -lactams

Also Published As

Publication number Publication date
BE737781A (en) 1970-02-23
NL6912465A (en) 1970-02-24
CH520137A (en) 1972-03-15
BR6911783D0 (en) 1973-01-04
AT292655B (en) 1971-09-10
FR2016990A1 (en) 1970-05-15
DE1795190B1 (en) 1972-05-31

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