DE225983C - - Google Patents

Info

Publication number
DE225983C
DE225983C DENDAT225983D DE225983DA DE225983C DE 225983 C DE225983 C DE 225983C DE NDAT225983 D DENDAT225983 D DE NDAT225983D DE 225983D A DE225983D A DE 225983DA DE 225983 C DE225983 C DE 225983C
Authority
DE
Germany
Prior art keywords
carvacrolphtalein
carvacrol
preparation
addition
phthalic anhydride
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.)
Active
Application number
DENDAT225983D
Other languages
German (de)
Publication of DE225983C publication Critical patent/DE225983C/de
Active legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D307/87—Benzo [c] furans; Hydrogenated benzo [c] furans
    • C07D307/88—Benzo [c] furans; Hydrogenated benzo [c] furans with one oxygen atom directly attached in position 1 or 3
    • C07D307/885—3,3-Diphenylphthalides

Description

7070

BERLIN. GEDRUCKT IN DER RE'CHSDRUCKEREI.BERLIN. PRINTED IN THE LEGAL PRINTING.

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur Darstellung von Carvacrolphtalein, dadurch gekennzeichnet, daß man Phtalsäureanhydrid mit Carvacrol für sich oder unter Zusatz von Kondensationsmitteln auf 120° nicht wesentlich übersteigende Temperaturen erhitzt.Process for the preparation of Carvacrolphtalein, characterized in that one Phthalic anhydride with carvacrol on its own or with the addition of condensing agents heated to 120 ° not significantly exceeding temperatures. 6565
DENDAT225983D Active DE225983C (en)

Publications (1)

Publication Number Publication Date
DE225983C true DE225983C (en)

Family

ID=486577

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT225983D Active DE225983C (en)

Country Status (1)

Country Link
DE (1) DE225983C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4940544A (en) * 1987-07-17 1990-07-10 Henkel Kommanditgesellschaft Auf Aktien Decentral wastewater treatment process
US5451319A (en) * 1988-03-30 1995-09-19 Kobayashi; Yoshio Anaerobic digestion process for sewage sludge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4940544A (en) * 1987-07-17 1990-07-10 Henkel Kommanditgesellschaft Auf Aktien Decentral wastewater treatment process
US5451319A (en) * 1988-03-30 1995-09-19 Kobayashi; Yoshio Anaerobic digestion process for sewage sludge

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