[go: up one dir, main page]

GB645967A - Improvements in or relating to cyanine dyestuffs - Google Patents

Improvements in or relating to cyanine dyestuffs

Info

Publication number
GB645967A
GB645967A GB1364748A GB1364748A GB645967A GB 645967 A GB645967 A GB 645967A GB 1364748 A GB1364748 A GB 1364748A GB 1364748 A GB1364748 A GB 1364748A GB 645967 A GB645967 A GB 645967A
Authority
GB
United Kingdom
Prior art keywords
iodide
alkyl
ethylbenzthiazole
chlorobenzthiazole
aralkyl
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
GB1364748A
Inventor
Frank Peter Doyle
John David Kendall
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.)
Ilford Imaging UK Ltd
Original Assignee
Ilford 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 Ilford Ltd filed Critical Ilford Ltd
Priority to GB1364748A priority Critical patent/GB645967A/en
Publication of GB645967A publication Critical patent/GB645967A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B23/00Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/02Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups
    • C09B23/08Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups more than three >CH- groups, e.g. polycarbocyanines
    • C09B23/083Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups more than three >CH- groups, e.g. polycarbocyanines five >CH- groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Cosmetics (AREA)
  • Thiazole And Isothizaole Compounds (AREA)

Abstract

Dicarbocyanine dyes are prepared by condensing a compound of the general formula <FORM:0645967/IV (c)/1> wherein R4 is alkyl, hydroxyalkyl, or aralkyl, R5 is H, alkyl, or aralkyl, n1 is 0 or 1, Y2 is an acid radicle, and D2 is the residue of a 5- or 6-membered heterocyclic ring, with a compound of one of the isomeric general formul <FORM:0645967/IV (c)/2> and <FORM:0645967/IV (c)/3> wherein X is alkyl or aryl, R1 is alkyl or aralkyl, R2 is alkyl, hydroxyalkyl, or aralkyl, R3 is H, alkyl, or aralkyl, n is 0 or 1, Y1 is an acid radicle, and D1 is the residue of a 5- or 6-membered heterocyclic nitrogen ring, the second reactant having been prepared by reacting an aldehyde of the formula X-CO-CH2-CHO with a mercaptan of the formula R1SH and reacting the product with a compound of the general formula <FORM:0645967/IV (c)/4> Where D1 and D2 are residues of polycyclic compounds, the carbocyclic rings may be substituted by one or more alkyl, aryl, amino, hydroxy, alkoxy, or methylene-dioxy groups or halogen atoms, and where R2 and R4 are hydroxyalkyl, the hydroxy groups may be acylated in the reaction. The condensation may be effected in presence of a base (e.g. pyridine, triethylamine, or sodium acetate). Bis - 2 - (3 - ethylbenzthiazole) - b - phenylpentamethinecyanine iodide is prepared by refluxing together 2-(b - or o -phenyl-o -ethylthiobutadienyl)-benzthiazole ethiodide, 2-methylbenzthiazole ethiodide, pyridine, and triethylamine. 2 - (1 - b - Acetoxyethylquinoline) - 21 - (1 - b - hydroxyethylquinoline) - b - or b 1 - phenylpenta-methinecyanine iodide, 2 - (3 - b - acetoxy - 5 - chlorobenzthiazole) - 21 - (3 - b - hydroxyethyl - 5 - chlorobenzthiazole) - b - or b 1 - phenylpenta-methinecyanine iodide, 2 - (3 - ethylbenzthiazole) - 21 - (3 - ethyl - 5 - chlorobenzthiazole) - b - or b 1 - methylpentamethinecyanine iodide, 2 - (3 - ethylbenzthiazole) - 21 - (1 - ethylquinoline) - b - or b 1\h - phenylpentamethinecyanine iodide, 2 - (3 - ethylbenzthiazole) - 21 - (3 - hydroxyethyl - 5 - chlorobenzthiazole) - b - or b 1 - phenylpentamethinecyanine iodide, 2 - (3 - b - acetoxyethyl - 5 - chlorobenzthiazole) - 21 - (3 - b - hydroxyethylbenzthiazole) - b - or b 1 - phenylpentamethinecyanine iodide, and 2-(3-ethylbenzthiazole)-21-(1 : 3 : 3-trimethylindolenine) - b - or b 1 - methylpentamethinecyanine iodide are similarly prepared. Specifications 645,965 and 645,966, [both in Group IV (b)], are referred to.
GB1364748A 1948-05-20 1948-05-20 Improvements in or relating to cyanine dyestuffs Expired GB645967A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1364748A GB645967A (en) 1948-05-20 1948-05-20 Improvements in or relating to cyanine dyestuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1364748A GB645967A (en) 1948-05-20 1948-05-20 Improvements in or relating to cyanine dyestuffs

Publications (1)

Publication Number Publication Date
GB645967A true GB645967A (en) 1950-11-15

Family

ID=10026830

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1364748A Expired GB645967A (en) 1948-05-20 1948-05-20 Improvements in or relating to cyanine dyestuffs

Country Status (1)

Country Link
GB (1) GB645967A (en)

Similar Documents

Publication Publication Date Title
GB549202A (en) Improvements in or relating to dyestuffs and dyestuff intermediates
GB645967A (en) Improvements in or relating to cyanine dyestuffs
GB526684A (en) Improvements in and relating to dyestuffs for sensitising photographic emulsions
GB640127A (en) Improvements in or relating to the production of cyanine dyestuffs and to the sensitising of photographic emulsions
GB620482A (en) Trinuclear cyanine dyes and photographic light-sensitive elements containing them
GB645966A (en) Improvements in or relating to dyestuff intermediates
GB641882A (en) A method of preparing cyanine dyes
GB549203A (en) Improvements in or relating to dyestuffs
GB684707A (en) Improvements in or relating to the production of dyestuffs and to the sensitising of photographic emulsions therewith
GB636738A (en) Polymethine dyes
US2471488A (en) Cyanine dyestuffs
GB674003A (en) Improvements in or relating to methine dyestuffs and photographic emulsions containing the same
GB728078A (en) Improvements in or relating to polymethin dyes
GB681451A (en) Improvements in or relating to polymethine compounds and to photographic silver halide emulsions sensitised therewith
GB717858A (en) Improvements in or relating to cyanine dyes
GB811876A (en) Improvements in or relating to cyanine dyestuffs
GB434234A (en) Manufacture of unsymmetrical pentacarbocyanine dyestuffs
GB645968A (en) Improvements in or relating to symmetrical dicarbocyanine dyestuffs and to sensitising photographic emulsions
US2892835A (en) Cyanine dyes containing a saturated heterocyclic nucleus
GB639758A (en) Dyestuff intermediates and photographic sensitizing cyanine dyes prepared therefrom
GB633735A (en) Improvements in or relating to the production of methine dyestuffs and to photographic emulsions sensitised therewith
GB1012958A (en) Production of cyanine dyes
US2533816A (en) Cyanine dyestuff intermediates
GB632277A (en) Improvements in or relating to the preparation of derivatives of phenthiazine
GB845588A (en) Improvements in or relating to trinuclear cyanine dyes