GB403754A - The manufacture of aldehydes of the benzanthrone series - Google Patents

The manufacture of aldehydes of the benzanthrone series

Info

Publication number
GB403754A
GB403754A GB2021132A GB2021132A GB403754A GB 403754 A GB403754 A GB 403754A GB 2021132 A GB2021132 A GB 2021132A GB 2021132 A GB2021132 A GB 2021132A GB 403754 A GB403754 A GB 403754A
Authority
GB
United Kingdom
Prior art keywords
benzanthrone
employed
aldehyde
nuclear substitution
phthalaminic
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
GB2021132A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2021132A priority Critical patent/GB403754A/en
Publication of GB403754A publication Critical patent/GB403754A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
    • C09B3/02—Benzathrones
    • C09B3/06—Preparation from starting materials already containing the benzanthrone nucleus

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

Bz-1-benzanthrone aldehyde and its nuclear substitution products are obtained by treating bz-1-w-phthaliminomethyl-benzanthrone or a nuclear substitution product thereof with an oxidising agent in the presence of aqueous alkali, or by previously preparing the intermediate phthalaminic acid and converting it by oxidation into the aldehyde. A catalyst may be employed. According to examples: (1) bz - 1 - w - phthalimino - methylbenzanthrone is treated with air in presence of caustic alkali to give the bz-1-aldehyde which may be oxidised in customary manner to benzanthrone bz-1-carboxylic acid. The intermediatelyformed phthalaminic acid prepared according to any known method may be employed initially; (2) the 6-chloro derivative is similarly treated with air or sodium hypochlorite, and the 6-bromo derivative may also be employed. Potassium ferricyanide and hydrogen peroxide are also specified as oxidising agents. Ferric hydroxide may be employed as catalyst. The starting materials are obtained by condensing benzanthrone or a nuclear substitution product thereof with w-halogen-methylphthalimide. Specification 352,626 is referred to.
GB2021132A 1932-07-16 1932-07-16 The manufacture of aldehydes of the benzanthrone series Expired GB403754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2021132A GB403754A (en) 1932-07-16 1932-07-16 The manufacture of aldehydes of the benzanthrone series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2021132A GB403754A (en) 1932-07-16 1932-07-16 The manufacture of aldehydes of the benzanthrone series

Publications (1)

Publication Number Publication Date
GB403754A true GB403754A (en) 1934-01-04

Family

ID=10142255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2021132A Expired GB403754A (en) 1932-07-16 1932-07-16 The manufacture of aldehydes of the benzanthrone series

Country Status (1)

Country Link
GB (1) GB403754A (en)

Similar Documents

Publication Publication Date Title
GB472489A (en) Manufacture of a dihydroxystilbene-dicarboxylic acid
GB403754A (en) The manufacture of aldehydes of the benzanthrone series
GB512182A (en) Improvements in the manufacture and production of oxidation products of olefine glycols
US1858551A (en) Manufacture of glycidic acids
US1518732A (en) Process of making camphor
GB294889A (en)
GB494742A (en) Manufacture of hydroxy-trimellitic acid
GB833680A (en) Production of aromatically substituted carbinols
GB353736A (en) The manufacture of oxidation products of derivatives of higher fatty acids containing sulphur
GB379862A (en) Improved manufacture of 2 : 3-amino-naphthol and derivatives thereof
GB464397A (en) The manufacture of unsaturated diketones related to the follicle hormone
GB564092A (en) Method for the production of p-substituted benzene sulphonamide-1,3,4-thiodiazole compounds
GB423446A (en) Dyestuff intermediates of the anthraquinone series and their production
GB434991A (en) Improvements in and relating to the production of alkali perborates
GB240051A (en) The manufacture of quinoline-4-aldehyde and its 2-position aryl derivatives
GB342379A (en) Manufacture of cyclic ketones of the acenaphthene series
GB734000A (en) Alpha-ethyl-beta-isopropyl acrolein
GB262141A (en) Manufacture of thiazole derivatives of 1:4-naphthoquinone
GB275927A (en) Improvements in the manufacture and production of benzanthrone derivatives
GB442167A (en) The manufacture of dyestuffs of the thioindigo series
GB746042A (en) Improvements in the production of styrene halohydrins and homologues thereof
GB453812A (en) A process of synthetically preparing ª‰(10)-oxycamphor
GB435113A (en) The manufacture of organic disulphides
GB360349A (en) Process for the manufacture of 3-hydroxythionaphthene-7-carboxylic acid chlorides and carboxylic acids
GB470247A (en) Process for the manufacture of pregnendiones