GB551921A - Manufacture of fluorene derivatives - Google Patents

Manufacture of fluorene derivatives

Info

Publication number
GB551921A
GB551921A GB1023741A GB1023741A GB551921A GB 551921 A GB551921 A GB 551921A GB 1023741 A GB1023741 A GB 1023741A GB 1023741 A GB1023741 A GB 1023741A GB 551921 A GB551921 A GB 551921A
Authority
GB
United Kingdom
Prior art keywords
acid
dibenzfluorenone
dinaphthyl
heated
amyl
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
GB1023741A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1023741A priority Critical patent/GB551921A/en
Publication of GB551921A publication Critical patent/GB551921A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/587—Unsaturated compounds containing a keto groups being part of a ring
    • C07C49/657—Unsaturated compounds containing a keto groups being part of a ring containing six-membered aromatic rings
    • C07C49/665—Unsaturated compounds containing a keto groups being part of a ring containing six-membered aromatic rings a keto group being part of a condensed ring system

Landscapes

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

Abstract

551,921. Dibenzfluorenone. TODD, A. R., SWAIN, G., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Aug. 12, 1941, No. 10237. [Class 2 (iii)] 1:2:5:6-Dibenzfluorenone is obtained by causing a N-nitroso-acyl-2-naphthylamine to react at not above 40 ‹C. with an aliphatic ester of 2-naphthoic acid which is liquid at the reaction temperature, whereby the corresponding aliphatic ester of 1:2<SP>1</SP>-dinaphthyl-2-carboxylic acid is obtained, which is hydrolysel and heated in an acid medium to bring about ring closure. 1:2:5:6-Dibenzfluorene is obtained by reduction. In examples the amyl ester of 1:2<SP>1</SP>-dinaphthyl-2-carboxylic acid is prepared from N-nitrosoacet-2-naphthalide and amyl-2- naphthoate, hydrolysed with potassium hydroxide and heated in solution in acetic acid with sulphuric acid.
GB1023741A 1941-08-12 1941-08-12 Manufacture of fluorene derivatives Expired GB551921A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1023741A GB551921A (en) 1941-08-12 1941-08-12 Manufacture of fluorene derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1023741A GB551921A (en) 1941-08-12 1941-08-12 Manufacture of fluorene derivatives

Publications (1)

Publication Number Publication Date
GB551921A true GB551921A (en) 1943-03-16

Family

ID=9964149

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1023741A Expired GB551921A (en) 1941-08-12 1941-08-12 Manufacture of fluorene derivatives

Country Status (1)

Country Link
GB (1) GB551921A (en)

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