GB1201545A - Method for preparing hexachlorophene - Google Patents

Method for preparing hexachlorophene

Info

Publication number
GB1201545A
GB1201545A GB2751468A GB2751468A GB1201545A GB 1201545 A GB1201545 A GB 1201545A GB 2751468 A GB2751468 A GB 2751468A GB 2751468 A GB2751468 A GB 2751468A GB 1201545 A GB1201545 A GB 1201545A
Authority
GB
United Kingdom
Prior art keywords
hexachlorophene
acid
trichlorophenol
weight
formaldehyde
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
GB2751468A
Inventor
Edwin Bernard Michaels
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1201545A publication Critical patent/GB1201545A/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
    • C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
    • C07C37/115—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms using acetals
    • 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
    • C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
    • C07C37/20—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms using aldehydes or ketones

Landscapes

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

Abstract

1,201,545. Preparation of hexachlorophene. E. B. MICHAELS. 10 June, 1968 [8 June, 1967; 6 Feb., 1968], No. 275l4/68. Heading C2C. The invention relates to a method for preparing bis-(3,5,6-trichloro-2-hydroxyphenyl) methane (hexachlorophene) which comprises the steps of admixing 1 part, by weight, of 2,4,5- trichlorophenol in from 0À25 to less than 1 part, by weight, of an organic medium selected from formic acid, acetic acid, acetic anhydride, propionic acid and mixtures of the same, condensing the latter, 2,4,5-trichlorophenol mixture with from 0À08 to 0À09 parts, by weight, of a formaldehyde-yielding material or formaldehyde in the presence of from 1 to 2 parts of an acid-condensing agent at a temperature ranging from about 80‹ to 120‹ C., and recovering hexachlorophene. In an example, 2,4,5-trichlorophenol in acetic acid is heated to 95‹ C. and 98% sulphuric acid added to which paraformaldehyde is gradually added whilst maintaining the temperature at 90‹ to 100‹ C. and hexachlorophene subsequently recovered. The di-sodium salt may be obtained by heating with sodium carbonate and sodium hydroxide and a mono-sodium salt by adding sulphuric acid to reduce the pH to 10.
GB2751468A 1967-06-08 1968-06-10 Method for preparing hexachlorophene Expired GB1201545A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64447667A 1967-06-08 1967-06-08
US70325768A 1968-02-06 1968-02-06

Publications (1)

Publication Number Publication Date
GB1201545A true GB1201545A (en) 1970-08-05

Family

ID=27094491

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2751468A Expired GB1201545A (en) 1967-06-08 1968-06-10 Method for preparing hexachlorophene

Country Status (1)

Country Link
GB (1) GB1201545A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2174090A (en) * 1985-04-16 1986-10-29 Nouvel Colette Improvement in the preparation and use of substituted bisphenhols

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2174090A (en) * 1985-04-16 1986-10-29 Nouvel Colette Improvement in the preparation and use of substituted bisphenhols
GB2174090B (en) * 1985-04-16 1989-07-05 Nouvel Colette Improvement in the preparation and use of substituted bisphenols

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees