GB1434575A - Production of 4-bromo-2,5-dichlorophenol - Google Patents

Production of 4-bromo-2,5-dichlorophenol

Info

Publication number
GB1434575A
GB1434575A GB5087173A GB5087173A GB1434575A GB 1434575 A GB1434575 A GB 1434575A GB 5087173 A GB5087173 A GB 5087173A GB 5087173 A GB5087173 A GB 5087173A GB 1434575 A GB1434575 A GB 1434575A
Authority
GB
United Kingdom
Prior art keywords
dichlorophenol
bromo
production
bromine
nov
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
GB5087173A
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.)
Shell Agrar GmbH and Co KG
Original Assignee
Celamerck GmbH and Co KG
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 Celamerck GmbH and Co KG filed Critical Celamerck GmbH and Co KG
Publication of GB1434575A publication Critical patent/GB1434575A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/62—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by introduction of halogen; by substitution of halogen atoms by other halogen atoms

Landscapes

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

Abstract

1434575 Bromodichlorophenol; preparation of CELAMERCK GmbH & CO KG 1 Nov 1973 [2 Nov 1972] 50871/73 Heading C2C 4-Bromo-2,5-dichlorophenol is prepared by reacting a mixture of 2,4- and 2,5-dichlorophenol and bromine at 30-100‹ C. in the presence of glacial acetic acid, the ratio of bromine to 2,5-dichlorophenol being approximately 1 : 1. The mixture of dichlorophenols may be obtained by hydrolysis of 1,2,4 - trichlorobenzene.
GB5087173A 1972-11-02 1973-11-01 Production of 4-bromo-2,5-dichlorophenol Expired GB1434575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722253550 DE2253550C2 (en) 1972-11-02 1972-11-02 Process for the preparation of 4-bromo-2,5-dichlorophenol

Publications (1)

Publication Number Publication Date
GB1434575A true GB1434575A (en) 1976-05-05

Family

ID=5860600

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5087173A Expired GB1434575A (en) 1972-11-02 1973-11-01 Production of 4-bromo-2,5-dichlorophenol

Country Status (2)

Country Link
DE (1) DE2253550C2 (en)
GB (1) GB1434575A (en)

Also Published As

Publication number Publication date
DE2253550A1 (en) 1974-01-31
DE2253550B1 (en) 1974-01-31
DE2253550C2 (en) 1974-08-29

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee