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GB472398A - Manufacture of substituted 3-aminopyrenes - Google Patents

Manufacture of substituted 3-aminopyrenes

Info

Publication number
GB472398A
GB472398A GB7995/36A GB799536A GB472398A GB 472398 A GB472398 A GB 472398A GB 7995/36 A GB7995/36 A GB 7995/36A GB 799536 A GB799536 A GB 799536A GB 472398 A GB472398 A GB 472398A
Authority
GB
United Kingdom
Prior art keywords
mixture
separated
hydrogenated
nitration
alcohol
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
GB7995/36A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB7995/36A priority Critical patent/GB472398A/en
Publication of GB472398A publication Critical patent/GB472398A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2603/00—Systems containing at least three condensed rings
    • C07C2603/02—Ortho- or ortho- and peri-condensed systems
    • C07C2603/40—Ortho- or ortho- and peri-condensed systems containing four condensed rings
    • C07C2603/42—Ortho- or ortho- and peri-condensed systems containing four condensed rings containing only six-membered rings
    • C07C2603/50—Pyrenes; Hydrogenated pyrenes

Landscapes

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

Abstract

A mixture of isomeric pyrene derivatives of the following constitutions <FORM:0472398/IV/1> where R is a monovalent substituent, is separated by fractional crystallization from water or an organic solvent or by fractional crystallization of the amine salts from aqueous strong acids. Solvents specified are alcohol, benzene, chlorobenzene, toluene, xylene, or pyridine. In examples: (1) a mixture of 3.8 and 3.10-dinitropyrene (obtained by nitration of pyrene) is hydrogenated in alcoholic solution, the 3.8-diaminopyrene is filtered off after cooling and the 3.10-diaminopyrene is obtained by concentration of the filtrate; (2) dinitropyrene as above is reduced with sodium hydrosulphide, and the diaminopyrenes so obtained are separated by fractional crystallization of their sulphates from dilute sulphuric acid; (3) a nitroacetaminopyrene mixture (obtained by nitration of 3-acetaminopyrene) is hydrogenated and the acetamino-aminopyrenes separated by diluting the solution in pyridine with differing amounts of water, after which the products may be saponified to diaminopyrenes or the nitroacetaminopyrenes may be saponified to nitroaminopyrenes and catalytically reduced, the free diamines being separated; (4) a chlornitropyrene mixture (prepared by nitration of 3-chlorpyrene) is hydrogenated, and the chloraminopyrenes fractionally crystallized from alcohol; (5) a nitroacetylpyrene mixture (prepared by nitration of acetylpyrene) is hydrogenated, and the aminoacetylpyrenes separated by crystallization from alcohol; (6) pyrene-3-carboxylic acid is nitrated to give a nitropyrene-carboxylic acid mixture which is then hydrogenated and the aminopyrenecarboxylic acids separated by boiling their hydrochlorides in dilute hydrochloric acid. Specification 434,128 is referred to.
GB7995/36A 1936-03-17 1936-03-17 Manufacture of substituted 3-aminopyrenes Expired GB472398A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7995/36A GB472398A (en) 1936-03-17 1936-03-17 Manufacture of substituted 3-aminopyrenes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7995/36A GB472398A (en) 1936-03-17 1936-03-17 Manufacture of substituted 3-aminopyrenes

Publications (1)

Publication Number Publication Date
GB472398A true GB472398A (en) 1937-09-17

Family

ID=9843750

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7995/36A Expired GB472398A (en) 1936-03-17 1936-03-17 Manufacture of substituted 3-aminopyrenes

Country Status (1)

Country Link
GB (1) GB472398A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488225A (en) * 1947-02-19 1949-11-15 Bunny Bear Inc Convertible bassinet and child's seat

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488225A (en) * 1947-02-19 1949-11-15 Bunny Bear Inc Convertible bassinet and child's seat

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