GB860554A - Synthesis of carbazole - Google Patents

Synthesis of carbazole

Info

Publication number
GB860554A
GB860554A GB26395/59A GB2639559A GB860554A GB 860554 A GB860554 A GB 860554A GB 26395/59 A GB26395/59 A GB 26395/59A GB 2639559 A GB2639559 A GB 2639559A GB 860554 A GB860554 A GB 860554A
Authority
GB
United Kingdom
Prior art keywords
diphenylamine
weight
parts
reaction vessel
carbazole
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
GB26395/59A
Inventor
Henry Monroe Grotta
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.)
American Marietta Co
Original Assignee
American Marietta 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 American Marietta Co filed Critical American Marietta Co
Priority to GB26395/59A priority Critical patent/GB860554A/en
Publication of GB860554A publication Critical patent/GB860554A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/30—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds
    • C07C209/32—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups
    • C07C209/36—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups by reduction of nitro groups bound to carbon atoms of six-membered aromatic rings in presence of hydrogen-containing gases and a catalyst

Abstract

Diphenylamine is catalytically cyclodehydrogenated in the vapour state by contacting with a catalyst, consisting of platinum or palladium supported on silica or aluminia or on a mixture of these, in the absence of air or oxygen and at a temperature of not less than 375 DEG C. to give carbazole. The presence of steam and/or hydrogen in the reaction vessel is advantageous and an inert gas such as nitrogen may also be present. If desired, the process may be conducted as a cyclic operation, the unconverted diphenylamine being recycled to the reaction vessel. The weight-hourly-space velocity, i.e. the ratio of the number of parts by weight of diphenylamine per hour introduced into the reaction zone to the number of parts by weight of catalyst preferably does not exceed 0.3.
GB26395/59A 1959-07-31 1959-07-31 Synthesis of carbazole Expired GB860554A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB26395/59A GB860554A (en) 1959-07-31 1959-07-31 Synthesis of carbazole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26395/59A GB860554A (en) 1959-07-31 1959-07-31 Synthesis of carbazole

Publications (1)

Publication Number Publication Date
GB860554A true GB860554A (en) 1961-02-08

Family

ID=10242976

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26395/59A Expired GB860554A (en) 1959-07-31 1959-07-31 Synthesis of carbazole

Country Status (1)

Country Link
GB (1) GB860554A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0808834A1 (en) * 1996-05-24 1997-11-26 Bayer Ag Process for the preparation of carbazole

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0808834A1 (en) * 1996-05-24 1997-11-26 Bayer Ag Process for the preparation of carbazole
US5760247A (en) * 1996-05-24 1998-06-02 Bayer Aktiengesellschaft Process for the preparation of carbazole

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