GB1135789A - Production of isatoic anhydride and halo derivatives thereof - Google Patents

Production of isatoic anhydride and halo derivatives thereof

Info

Publication number
GB1135789A
GB1135789A GB4593066A GB4593066A GB1135789A GB 1135789 A GB1135789 A GB 1135789A GB 4593066 A GB4593066 A GB 4593066A GB 4593066 A GB4593066 A GB 4593066A GB 1135789 A GB1135789 A GB 1135789A
Authority
GB
United Kingdom
Prior art keywords
isatoic anhydride
phthimide
production
halo derivatives
hypohalite
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
GB4593066A
Inventor
Donald Russell Hill
William A Shire
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.)
Maumee Chemical Co
Original Assignee
Maumee Chemical Co
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 Maumee Chemical Co filed Critical Maumee Chemical Co
Priority to GB4593066A priority Critical patent/GB1135789A/en
Publication of GB1135789A publication Critical patent/GB1135789A/en
Expired legal-status Critical Current

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

1,135,789. Isatoic anhydride and halogen derivatives thereof. MAUMEE CHEMICAL CO. 14 Oct., 1966, No. 45930/66. Heading C2C. Isatoic anhydride and halogen derivatives thereof of the formula in which Z, Z<SP>1</SP>, Z<SP>11</SP> and Z<SP>111</SP> denote hydrogen or halogen atoms, are made from phthimide or the corresponding halogenated phthimide by a process comprising converting the phthimide into an aqueous solution of a salt, treating the salt solution with a metal hypohalite, such as sodium hypochlorite, and finally acidifying the mixture. The time which should elapse between the formation of the salt solution and the addition of hypohalite is indicated graphically by reference to the reaction temperature, which may be up to 45‹ C. The final acidification should be sufficient to establish a pH value of 5À5-9. Examples are given.
GB4593066A 1966-10-14 1966-10-14 Production of isatoic anhydride and halo derivatives thereof Expired GB1135789A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4593066A GB1135789A (en) 1966-10-14 1966-10-14 Production of isatoic anhydride and halo derivatives thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4593066A GB1135789A (en) 1966-10-14 1966-10-14 Production of isatoic anhydride and halo derivatives thereof

Publications (1)

Publication Number Publication Date
GB1135789A true GB1135789A (en) 1968-12-04

Family

ID=10439146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4593066A Expired GB1135789A (en) 1966-10-14 1966-10-14 Production of isatoic anhydride and halo derivatives thereof

Country Status (1)

Country Link
GB (1) GB1135789A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725321A (en) * 1971-05-26 1973-04-03 Bayer Ag Blowing agents
US3887550A (en) * 1969-11-20 1975-06-03 Sherwin Williams Co Method for producing heterocyclic acid anhydrides

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3887550A (en) * 1969-11-20 1975-06-03 Sherwin Williams Co Method for producing heterocyclic acid anhydrides
US3725321A (en) * 1971-05-26 1973-04-03 Bayer Ag Blowing agents

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