GB1347467A - Process for the preparation of crystal biolet lactone - Google Patents

Process for the preparation of crystal biolet lactone

Info

Publication number
GB1347467A
GB1347467A GB1347467DA GB1347467A GB 1347467 A GB1347467 A GB 1347467A GB 1347467D A GB1347467D A GB 1347467DA GB 1347467 A GB1347467 A GB 1347467A
Authority
GB
United Kingdom
Prior art keywords
crystal violet
violet lactone
lactone
peroxide
benzoate
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
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.)
Clayton Aniline Co Ltd
Original Assignee
Clayton Aniline Co Ltd
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 Clayton Aniline Co Ltd filed Critical Clayton Aniline Co Ltd
Publication of GB1347467A publication Critical patent/GB1347467A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D307/87—Benzo [c] furans; Hydrogenated benzo [c] furans
    • C07D307/88—Benzo [c] furans; Hydrogenated benzo [c] furans with one oxygen atom directly attached in position 1 or 3
    • C07D307/885—3,3-Diphenylphthalides

Landscapes

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

Abstract

1347467 Crystal violet lactone CLAYTON ANILINE CO Ltd 17 Nov 1971 [18 Nov 1970] 54819/70 Heading C4P 3,3 - Bis - (4 - dimethylaminophenyl) - 6- dimethylaminophthalide (Crystal Violet Lactone) is prepared by adding an aqueous solution of hydrogen peroxide to an aqueous solution of a salt of 2[4,4<SP>1 </SP>- bis - (dimethylamino) - benzohydryl] - 5 - dimethylaminobenzoic acid at a pH of 8-12À5 and a temperature of 60-100‹ C. Suitable salts are alkali metal salts and the reaction mixture advantageously contains 5- 100% by weight of an alcohol, e.g. isopropanol based on the weight of the benzoate. The molar ratio of benzoate to peroxide may be from 1 : 1 to 1 : 1À5, the peroxide solution being added dropwise over a period of 1-4 hours. The reaction mixture is subsequently cooled and filtered to give Crystal Violet Lactone which may be recrystallized from an aromatic solvent.
GB1347467D 1970-11-18 1970-11-18 Process for the preparation of crystal biolet lactone Expired GB1347467A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5481970 1970-11-18

Publications (1)

Publication Number Publication Date
GB1347467A true GB1347467A (en) 1974-02-27

Family

ID=10472172

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1347467D Expired GB1347467A (en) 1970-11-18 1970-11-18 Process for the preparation of crystal biolet lactone

Country Status (5)

Country Link
JP (1) JPS5628940B1 (en)
CH (1) CH557403A (en)
DE (1) DE2156662C3 (en)
FR (1) FR2114819A5 (en)
GB (1) GB1347467A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005397A1 (en) * 1979-02-14 1980-08-28 Hodogaya Chemical Co Ltd IMPROVED METHOD FOR PRODUCING 3,3-BIS- (4-DIMETHYLAMINOPHENYL) -6-DIMETHYLAMINOPHTHALIDE
US4233223A (en) * 1978-08-12 1980-11-11 Basf Aktiengesellschaft Preparation of 3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminophthalide
US4845245A (en) * 1987-05-18 1989-07-04 Yamada Chemical Co., Ltd. Process for producing 3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminophthalide
WO2012160084A1 (en) 2011-05-25 2012-11-29 Tetra Laval Holdings & Finance S.A. Improved near infrared absorbers
WO2013098076A1 (en) 2011-12-30 2013-07-04 Tetra Laval Holdings & Finance S.A. Laminated color forming composition
US8853314B2 (en) 2008-10-23 2014-10-07 Datalase Ltd. Heat absorbing additives
US9267042B2 (en) 2008-10-27 2016-02-23 Datalase Ltd. Coating composition for marking substrates
US9333786B2 (en) 2007-07-18 2016-05-10 Datalase, Ltd. Laser-sensitive coating formulations

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS525746A (en) * 1975-07-03 1977-01-17 Kanzaki Paper Mfg Co Ltd Novel process for preparation of triarymethane derivatives
JPH0524531U (en) * 1991-08-02 1993-03-30 富士特殊紙業株式会社 Rice bag

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4233223A (en) * 1978-08-12 1980-11-11 Basf Aktiengesellschaft Preparation of 3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminophthalide
DE3005397A1 (en) * 1979-02-14 1980-08-28 Hodogaya Chemical Co Ltd IMPROVED METHOD FOR PRODUCING 3,3-BIS- (4-DIMETHYLAMINOPHENYL) -6-DIMETHYLAMINOPHTHALIDE
US4271075A (en) * 1979-02-14 1981-06-02 Hodogaya Chemical Co., Ltd. Process for producing 3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminophthalide
US4845245A (en) * 1987-05-18 1989-07-04 Yamada Chemical Co., Ltd. Process for producing 3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminophthalide
US9333786B2 (en) 2007-07-18 2016-05-10 Datalase, Ltd. Laser-sensitive coating formulations
US8853314B2 (en) 2008-10-23 2014-10-07 Datalase Ltd. Heat absorbing additives
US9267042B2 (en) 2008-10-27 2016-02-23 Datalase Ltd. Coating composition for marking substrates
WO2012160084A1 (en) 2011-05-25 2012-11-29 Tetra Laval Holdings & Finance S.A. Improved near infrared absorbers
WO2013098076A1 (en) 2011-12-30 2013-07-04 Tetra Laval Holdings & Finance S.A. Laminated color forming composition

Also Published As

Publication number Publication date
JPS5628940B1 (en) 1981-07-04
DE2156662B2 (en) 1981-04-30
DE2156662A1 (en) 1972-05-25
DE2156662C3 (en) 1982-04-15
CH557403A (en) 1974-12-31
FR2114819A5 (en) 1972-06-30

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Legal Events

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