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GB949306A - Method of making alkylidene bis-dibromo-phenols - Google Patents

Method of making alkylidene bis-dibromo-phenols

Info

Publication number
GB949306A
GB949306A GB350262A GB350262A GB949306A GB 949306 A GB949306 A GB 949306A GB 350262 A GB350262 A GB 350262A GB 350262 A GB350262 A GB 350262A GB 949306 A GB949306 A GB 949306A
Authority
GB
United Kingdom
Prior art keywords
solvent
bromination
effected
product
diphenol
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
GB350262A
Inventor
Andrew Joseph Dietzler
Henry Emil Hennis
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.)
Dow Chemical Co
Original Assignee
Dow Chemical 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 Dow Chemical Co filed Critical Dow Chemical Co
Priority to GB350262A priority Critical patent/GB949306A/en
Publication of GB949306A publication Critical patent/GB949306A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
    • C07C39/24—Halogenated derivatives
    • C07C39/367—Halogenated derivatives polycyclic non-condensed, containing only six-membered aromatic rings as cyclic parts, e.g. halogenated poly-hydroxyphenylalkanes
    • 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
    • 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
    • C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
    • C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
    • 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
    • C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
    • C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
    • C07C37/84—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by crystallisation

Landscapes

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

Abstract

Alkylidene bis-dibromophenols are prepared by direct bromination of alkylidene diphenols in a solvent non-solvent system. The preferred solvents are aliphatic alcohols of 1-4 carbon atoms, and the preferred non-solvent is water. The entire process may be effected in a solvent non-solvent system, or the bromination may be effected in a solvent only and a non-solvent then added to precipitate the product. The latter procedure is particularly useful when methanol or ethanol is used as the solvent and it is desired to recover, as a distillate, methyl or ethylbromide formed as a by-product from the alcohol and hydrogen bromide liberated in the bromination. The bromination may be effected at 15-45 DEG C. over a period of at least one hour, and the reaction mixture may then be heated under reflux, suitably for half an hour; the mixture may then be cooled and the product filtered. Examples are given of the bromination of 4, 41-isopropylidene diphenol to yield 4, 41-isopropylidene-bis (2, 6-dibromophenol). The bromination of 4, 41-sec.-butylidene diphenol and of 4, 41-cyclohexylidene diphenol is also mentioned.
GB350262A 1962-01-30 1962-01-30 Method of making alkylidene bis-dibromo-phenols Expired GB949306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB350262A GB949306A (en) 1962-01-30 1962-01-30 Method of making alkylidene bis-dibromo-phenols

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB350262A GB949306A (en) 1962-01-30 1962-01-30 Method of making alkylidene bis-dibromo-phenols

Publications (1)

Publication Number Publication Date
GB949306A true GB949306A (en) 1964-02-12

Family

ID=9759550

Family Applications (1)

Application Number Title Priority Date Filing Date
GB350262A Expired GB949306A (en) 1962-01-30 1962-01-30 Method of making alkylidene bis-dibromo-phenols

Country Status (1)

Country Link
GB (1) GB949306A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4783556A (en) * 1985-09-23 1988-11-08 Ethyl Corporation Tetrabromobisphenol-A process
US4909997A (en) * 1985-09-23 1990-03-20 Ethyl Corporation Tetrabromobisphenol-A process
US5017728A (en) * 1990-08-20 1991-05-21 Ethyl Corporation Tetrabromobisphenol-A process
US5107035A (en) * 1990-11-15 1992-04-21 Ethyl Corporation Process for high purity tetrabromobisphenol-A
US5208389A (en) * 1992-04-01 1993-05-04 Ethyl Corporation Process for high purity tetrabromobisphenol-A
US5283375A (en) * 1992-04-01 1994-02-01 Ethyl Corporation Process for high purity tetrabromobisphenol-A
US5527971A (en) * 1995-04-24 1996-06-18 Albemarle Corporation Process for the preparation of tetrabromobisphenol-A
WO1996027576A1 (en) * 1995-03-06 1996-09-12 Albemarle Corporation A process for the preparation of tetrabromobisphenol-a
WO1996033964A1 (en) * 1995-04-24 1996-10-31 Albemarle Corporation A process for the preparation of tetrabromobisphenol-a
US6002050A (en) * 1995-03-06 1999-12-14 Albemarle Corporation Process for the preparation of tetrabromobisphenol-A
US6084137A (en) * 1995-03-06 2000-07-04 Albemarle Corporation Process for the preparation of tetrabromobisphenol-A
US6084136A (en) * 1995-03-06 2000-07-04 Albmarle Corporation Process for the preparation of tetrabromobisphenol-A
US6147264A (en) * 1999-04-08 2000-11-14 Albemarle Corporation Process for producing tetrabromobisphenol-A
US6218584B1 (en) 1995-03-06 2001-04-17 Albemarle Corporation Process for the preparation of tetrabromobisphenol-A
US6235946B1 (en) 1995-03-06 2001-05-22 Albemarle Corporation Process for the preparation of tetrabromobisphenol-A

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4783556A (en) * 1985-09-23 1988-11-08 Ethyl Corporation Tetrabromobisphenol-A process
US4909997A (en) * 1985-09-23 1990-03-20 Ethyl Corporation Tetrabromobisphenol-A process
US5017728A (en) * 1990-08-20 1991-05-21 Ethyl Corporation Tetrabromobisphenol-A process
US5107035A (en) * 1990-11-15 1992-04-21 Ethyl Corporation Process for high purity tetrabromobisphenol-A
US5208389A (en) * 1992-04-01 1993-05-04 Ethyl Corporation Process for high purity tetrabromobisphenol-A
US5283375A (en) * 1992-04-01 1994-02-01 Ethyl Corporation Process for high purity tetrabromobisphenol-A
US5847232A (en) * 1995-03-06 1998-12-08 Albemarle Corporation Process for the preparation of tetrabromobisphenol-A
US6218584B1 (en) 1995-03-06 2001-04-17 Albemarle Corporation Process for the preparation of tetrabromobisphenol-A
US6313355B1 (en) 1995-03-06 2001-11-06 Thanikavelu Manimaran Process for the preparation of tetrabromobisphenol-A
US6300527B1 (en) 1995-03-06 2001-10-09 Albemarle Corporation Process for the preparation of tetrabromobisphenol-A
US6235946B1 (en) 1995-03-06 2001-05-22 Albemarle Corporation Process for the preparation of tetrabromobisphenol-A
US6002050A (en) * 1995-03-06 1999-12-14 Albemarle Corporation Process for the preparation of tetrabromobisphenol-A
US6084137A (en) * 1995-03-06 2000-07-04 Albemarle Corporation Process for the preparation of tetrabromobisphenol-A
US6084136A (en) * 1995-03-06 2000-07-04 Albmarle Corporation Process for the preparation of tetrabromobisphenol-A
WO1996027576A1 (en) * 1995-03-06 1996-09-12 Albemarle Corporation A process for the preparation of tetrabromobisphenol-a
US6162953A (en) * 1995-03-06 2000-12-19 Albemarle Corporation Process for the preparation of tetrabromobisphenol-A
US5527971A (en) * 1995-04-24 1996-06-18 Albemarle Corporation Process for the preparation of tetrabromobisphenol-A
US5723690A (en) * 1995-04-24 1998-03-03 Albemarle Corporation Process for the preparation of tetrabromobisphenol-A
WO1996033964A1 (en) * 1995-04-24 1996-10-31 Albemarle Corporation A process for the preparation of tetrabromobisphenol-a
US6147264A (en) * 1999-04-08 2000-11-14 Albemarle Corporation Process for producing tetrabromobisphenol-A

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