GB1039704A - Process for obtaining crystal violet lactone - Google Patents

Process for obtaining crystal violet lactone

Info

Publication number
GB1039704A
GB1039704A GB1795865A GB1795865A GB1039704A GB 1039704 A GB1039704 A GB 1039704A GB 1795865 A GB1795865 A GB 1795865A GB 1795865 A GB1795865 A GB 1795865A GB 1039704 A GB1039704 A GB 1039704A
Authority
GB
United Kingdom
Prior art keywords
aqueous solution
crystal violet
violet lactone
approximate range
gaseous oxygen
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
GB1795865A
Inventor
Albert Edward Munro
Nathan Norman Grounse
Edward Melvin Davis
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.)
STWB Inc
Original Assignee
Sterling Drug Inc
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 Sterling Drug Inc filed Critical Sterling Drug Inc
Priority to GB1795865A priority Critical patent/GB1039704A/en
Publication of GB1039704A publication Critical patent/GB1039704A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B11/00—Diaryl- or thriarylmethane dyes
    • C09B11/04—Diaryl- or thriarylmethane dyes derived from triarylmethanes, i.e. central C-atom is substituted by amino, cyano, alkyl
    • C09B11/10—Amino derivatives of triarylmethanes
    • C09B11/24—Phthaleins containing amino groups ; Phthalanes; Fluoranes; Phthalides; Rhodamine dyes; Phthaleins having heterocyclic aryl rings; Lactone or lactame forms of triarylmethane dyes

Landscapes

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

Abstract

Crystal violet lactone is made by intimately admixing a gas comprising molecular oxygen, preferably air, with an aqueous solution of an alkali metal salt of 2-[4,41-bis-(dimethylamino) benzohydryl] - 5 - dimethylaminobenzoic acid at a pH in the approximate range 8 to 12.5 and at a temperature in the approximate range 15 DEG to 160 DEG C. The gaseous oxygen may be bubbled through the aqueous solution, or on, a large scale, the aqueous solution may be circulated through a jet to produce a finely divided spray into which a rapid stream of gaseous oxygen is drawn. Diatomaceous silica may be dispersed in the solution to reduce reaction time and an oxidation catalyst such as manganese palmitate or stearate may be present.
GB1795865A 1965-04-28 1965-04-28 Process for obtaining crystal violet lactone Expired GB1039704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1795865A GB1039704A (en) 1965-04-28 1965-04-28 Process for obtaining crystal violet lactone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1795865A GB1039704A (en) 1965-04-28 1965-04-28 Process for obtaining crystal violet lactone

Publications (1)

Publication Number Publication Date
GB1039704A true GB1039704A (en) 1966-08-17

Family

ID=10104194

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1795865A Expired GB1039704A (en) 1965-04-28 1965-04-28 Process for obtaining crystal violet lactone

Country Status (1)

Country Link
GB (1) GB1039704A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2215048A1 (en) * 1972-03-28 1973-10-11 Basf Ag PROCESS FOR THE MANUFACTURING OF 2-ANGULAR CLAMP ON UP TO (4 ', 4 "-DIALKYLAMINO) BENZHYDRYL ANGLE CLAMP TO -5-AMINOBENZOIC ACID

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2215048A1 (en) * 1972-03-28 1973-10-11 Basf Ag PROCESS FOR THE MANUFACTURING OF 2-ANGULAR CLAMP ON UP TO (4 ', 4 "-DIALKYLAMINO) BENZHYDRYL ANGLE CLAMP TO -5-AMINOBENZOIC ACID

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