GB816855A - Improved processes of manufacture of 4-bromo-4-nitrocarbanilide - Google Patents

Improved processes of manufacture of 4-bromo-4-nitrocarbanilide

Info

Publication number
GB816855A
GB816855A GB28256A GB28256A GB816855A GB 816855 A GB816855 A GB 816855A GB 28256 A GB28256 A GB 28256A GB 28256 A GB28256 A GB 28256A GB 816855 A GB816855 A GB 816855A
Authority
GB
United Kingdom
Prior art keywords
nitrocarbanilide
bromo
manufacture
improved processes
bromination
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
GB28256A
Inventor
Walter Hepworth
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
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of GB816855A publication Critical patent/GB816855A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/18Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas
    • C07C273/1854Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas by reactions not involving the formation of the N-C(O)-N- moiety

Abstract

4-Bromo-41-nitrocarbanilide is prepared either by bromination of 4-nitrocarbanilide or by interaction of p-bromophenylurea and p-nitroaniline. The bromination is advantageously carried out in the presence of an inert diluent or solvent, e.g. acetic acid, either at ordinary temperatures, e.g. about 15 DEG to 25 DEG C., or at elevated temperatures, e.g. about 90 DEG to 95 DEG C. The interaction is also preferably carried out in an inert diluent or solvent, e.g. o-dichlorobenzene or acetic acid. Examples are given. Specification 816,856, [Group VI], is referred to.
GB28256A 1956-01-04 Improved processes of manufacture of 4-bromo-4-nitrocarbanilide Expired GB816855A (en)

Publications (1)

Publication Number Publication Date
GB816855A true GB816855A (en) 1959-07-22

Family

ID=1593309

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28256A Expired GB816855A (en) 1956-01-04 Improved processes of manufacture of 4-bromo-4-nitrocarbanilide

Country Status (1)

Country Link
GB (1) GB816855A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0531689A1 (en) * 1991-08-16 1993-03-17 Chemie Linz GmbH Process for the preparation of pure N,N'-asymmetrically substituted phenylureas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0531689A1 (en) * 1991-08-16 1993-03-17 Chemie Linz GmbH Process for the preparation of pure N,N'-asymmetrically substituted phenylureas

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