GB881488A - Isomerisation process - Google Patents

Isomerisation process

Info

Publication number
GB881488A
GB881488A GB20102/60A GB2010260A GB881488A GB 881488 A GB881488 A GB 881488A GB 20102/60 A GB20102/60 A GB 20102/60A GB 2010260 A GB2010260 A GB 2010260A GB 881488 A GB881488 A GB 881488A
Authority
GB
United Kingdom
Prior art keywords
isomer
mixture
amino group
disubstituted amino
isomers
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
GB20102/60A
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.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche 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 F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Publication of GB881488A publication Critical patent/GB881488A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D311/78—Ring systems having three or more relevant rings
    • C07D311/80—Dibenzopyrans; Hydrogenated dibenzopyrans
    • C07D311/82—Xanthenes
    • C07D311/90—Xanthenes with hydrocarbon radicals, substituted by amino radicals, directly attached in position 9

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Cephalosporin Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Compounds of the general formula <FORM:0881488/IV (b)/1> (wherein X represents a halogen atom and Y a disubstituted amino group) are isomerized by treating an isomer (or a mixture of isomers containing one isomer in excess of the other) of such a compound with a strong basic agent in a polar solvent in the presence of an organic base corresponding to the disubstituted amino group. The product is a mixture of isomers in approximately equal proportions, from which one isomer may be separated and the other again subjected to the isomerization process. Specification 829,763 is referred to.
GB20102/60A 1959-06-19 1960-06-08 Isomerisation process Expired GB881488A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH7464359A CH387654A (en) 1959-06-19 1959-06-19 Process for isomerization of tricyclic compounds

Publications (1)

Publication Number Publication Date
GB881488A true GB881488A (en) 1961-11-01

Family

ID=4533533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20102/60A Expired GB881488A (en) 1959-06-19 1960-06-08 Isomerisation process

Country Status (6)

Country Link
BE (1) BE591847A (en)
CH (1) CH387654A (en)
ES (1) ES259051A1 (en)
GB (1) GB881488A (en)
NL (1) NL103196C (en)
OA (1) OA00932A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5353674A (en) * 1976-10-20 1978-05-16 Pfizer Proauction of cis isomer of n*nndimethyll9*33*44 methyll11piperadinyl*propylidene* thioxanthenee22sulphonamide

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5353674A (en) * 1976-10-20 1978-05-16 Pfizer Proauction of cis isomer of n*nndimethyll9*33*44 methyll11piperadinyl*propylidene* thioxanthenee22sulphonamide
FR2368485A1 (en) * 1976-10-20 1978-05-19 Pfizer PROCESS FOR TRANS-N, N-DIMETHYL- 9 - (3- (4-METHYL-1-PIPERAZINYL) PROPYLIDENE) THIOXANTHENE-2-SULFAMIDE IN ITS CIS ISOMER AND SEPARATION OF THIS ISOMER
JPS6139311B2 (en) * 1976-10-20 1986-09-03 Pfizer

Also Published As

Publication number Publication date
CH387654A (en) 1965-02-15
BE591847A (en) 1960-12-14
ES259051A1 (en) 1961-01-01
OA00932A (en) 1968-03-22
NL103196C (en)

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