ATE799T1 - PROCESS FOR THE PREPARATION OF ISATOSAEUREANHYDRIDES. - Google Patents

PROCESS FOR THE PREPARATION OF ISATOSAEUREANHYDRIDES.

Info

Publication number
ATE799T1
ATE799T1 AT80102816T AT80102816T ATE799T1 AT E799 T1 ATE799 T1 AT E799T1 AT 80102816 T AT80102816 T AT 80102816T AT 80102816 T AT80102816 T AT 80102816T AT E799 T1 ATE799 T1 AT E799T1
Authority
AT
Austria
Prior art keywords
preparation
isatosaeureanhydrides
formula
image
hydrogen
Prior art date
Application number
AT80102816T
Other languages
German (de)
Inventor
Gernot Dr. Reissenweber
Original Assignee
Basf Aktiengesellschaft
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 Basf Aktiengesellschaft filed Critical Basf Aktiengesellschaft
Application granted granted Critical
Publication of ATE799T1 publication Critical patent/ATE799T1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D265/00—Heterocyclic compounds containing six-membered rings having one nitrogen atom and one oxygen atom as the only ring hetero atoms
    • C07D265/04—1,3-Oxazines; Hydrogenated 1,3-oxazines
    • C07D265/12—1,3-Oxazines; Hydrogenated 1,3-oxazines condensed with carbocyclic rings or ring systems
    • C07D265/14—1,3-Oxazines; Hydrogenated 1,3-oxazines condensed with carbocyclic rings or ring systems condensed with one six-membered ring
    • C07D265/24—1,3-Oxazines; Hydrogenated 1,3-oxazines condensed with carbocyclic rings or ring systems condensed with one six-membered ring with hetero atoms directly attached in positions 2 and 4
    • C07D265/26—Two oxygen atoms, e.g. isatoic anhydride

Abstract

A process for the preparation of isatoic anhydrides of the formula <IMAGE> where R1, R2, R3 and R4 are identical or different and each is hydrogen, alkyl, alkoxy, halogen, nitro, haloalkyl or haloalkoxy, by reacting an isatin of the formula <IMAGE> where R1, R2, R3 and R4 have the stated meanings, with hydrogen peroxide in an acid medium.
AT80102816T 1979-06-22 1980-05-21 PROCESS FOR THE PREPARATION OF ISATOSAEUREANHYDRIDES. ATE799T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792925175 DE2925175A1 (en) 1979-06-22 1979-06-22 METHOD FOR PRODUCING ISATOIC ACID ANHYDRIDES
EP80102816A EP0021043B1 (en) 1979-06-22 1980-05-21 Process for preparing isato-acid anhydrides

Publications (1)

Publication Number Publication Date
ATE799T1 true ATE799T1 (en) 1982-04-15

Family

ID=6073849

Family Applications (1)

Application Number Title Priority Date Filing Date
AT80102816T ATE799T1 (en) 1979-06-22 1980-05-21 PROCESS FOR THE PREPARATION OF ISATOSAEUREANHYDRIDES.

Country Status (8)

Country Link
US (1) US4316020A (en)
EP (1) EP0021043B1 (en)
JP (1) JPS5649372A (en)
AT (1) ATE799T1 (en)
DE (2) DE2925175A1 (en)
HU (1) HU184302B (en)
IL (1) IL60066A (en)
SU (1) SU919594A3 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4897478A (en) * 1987-09-11 1990-01-30 Basf Aktiengesellschaft Preparation of haloisatoic anhydrides
GB8803113D0 (en) * 1988-02-11 1988-03-09 Bp Chem Int Ltd Anhydrides in detergent compositions
DE4313174A1 (en) * 1993-04-22 1994-10-27 Hoechst Ag Process for the preparation of high-purity 3-chloroanthranilic acid alkyl esters from 3-chloroanthranilic acid
US20050222175A1 (en) * 2004-03-31 2005-10-06 Dhanoa Dale S New piperidinylamino-thieno[2,3-D] pyrimidine compounds
US7612078B2 (en) * 2003-03-31 2009-11-03 Epix Delaware, Inc. Piperidinylamino-thieno[2,3-D] pyrimidine compounds
US7488736B2 (en) * 2004-05-17 2009-02-10 Epix Delaware, Inc. Thienopyridinone compounds and methods of treatment
US7598265B2 (en) * 2004-09-30 2009-10-06 Epix Delaware, Inc. Compositions and methods for treating CNS disorders
US7407966B2 (en) * 2004-10-07 2008-08-05 Epix Delaware, Inc. Thienopyridinone compounds and methods of treatment
US7576211B2 (en) * 2004-09-30 2009-08-18 Epix Delaware, Inc. Synthesis of thienopyridinone compounds and related intermediates
ES2525152T3 (en) 2006-07-19 2014-12-18 E.I. Du Pont De Nemours And Company Process for obtaining 3-substituted 2-amino-5-halobenzamides
US8114894B2 (en) * 2008-12-03 2012-02-14 Nanotherapeutics, Inc. Bicyclic compounds and methods of making and using same

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3238201A (en) * 1962-09-18 1966-03-01 Parke Davis & Co Isatoic anhydride derivatives
CH507279A (en) * 1966-07-20 1971-05-15 Maumee Chemical Company 1,2-dihydro-4h-2,4-dioxo-3,1-benzoxazine and - halogen derivs prepn
DE1770458C3 (en) * 1968-05-20 1981-11-05 Bayer Ag, 5090 Leverkusen Process for the production of isatoic anhydride
IL39299A0 (en) * 1971-08-23 1972-06-28 Sherwin Williams Co Method for producing isatoic anhydride
CH558352A (en) * 1971-10-27 1975-01-31 Sherwin Williams Co N-carboxy-anthranilic -and 3-aza-anthranilic-acid - anhydrides - prepd by rearrangement of the n-halo-imides
DE2206863A1 (en) * 1972-02-14 1973-08-23 Basf Ag 6-chloroisatoic anhydride prepn - from isatoic anhydride and sulphuryl chloride
DE2346308A1 (en) * 1973-09-14 1975-03-27 Basf Ag Isatoic anhydride prepn. - by oxidation of phthalamate salts with hypohalites in the presence of halogen or haloamide and a polymerisation inhibitor
IT1003157B (en) * 1972-11-28 1976-06-10 Basf Ag PROCESS FOR THE PRODUCTION OF NON-SUBSTITUTED OR SUBSTITUTED ISATOIC DIOXIDE
US3989698A (en) * 1975-02-20 1976-11-02 The Sherwin-Williams Company Process for preparing benzoxazines

Also Published As

Publication number Publication date
DE2925175A1 (en) 1981-01-08
HU184302B (en) 1984-08-28
JPS5649372A (en) 1981-05-02
IL60066A (en) 1983-06-15
EP0021043B1 (en) 1982-03-31
IL60066A0 (en) 1980-07-31
SU919594A3 (en) 1982-04-07
DE3060257D1 (en) 1982-05-06
US4316020A (en) 1982-02-16
EP0021043A1 (en) 1981-01-07

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