GB730489A - Improvements in or relating to cyanine and merocyanine dyes - Google Patents

Improvements in or relating to cyanine and merocyanine dyes

Info

Publication number
GB730489A
GB730489A GB2877252A GB2877252A GB730489A GB 730489 A GB730489 A GB 730489A GB 2877252 A GB2877252 A GB 2877252A GB 2877252 A GB2877252 A GB 2877252A GB 730489 A GB730489 A GB 730489A
Authority
GB
United Kingdom
Prior art keywords
formula
alkyl
compound
nucleus
prepared
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
GB2877252A
Inventor
John David Kendall
George Frank Duffin
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 GB2877252A priority Critical patent/GB730489A/en
Publication of GB730489A publication Critical patent/GB730489A/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
    • C09B23/10The polymethine chain containing an even number of >CH- groups
    • C09B23/105The polymethine chain containing an even number of >CH- groups two >CH- groups
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Plural Heterocyclic Compounds (AREA)

Abstract

Dyes of the following general formula are described:- I <FORM:0730489/IV (c)/1> and II <FORM:0730489/IV (c)/2> wherein R1, R2, R3 and R4 are alkyl groups containing up to 4 carbon atoms, R5 is an alkyl group, R6 is a hydrocarbon radical or is joined via carbon and nitrogen to the nucleus D2 to form a heterocyclic nucleus, R7 is H or alkyl, X is an anion, m and n are 0 or 1 and D1 and D2 complete heterocyclic nuclei. The dyes of formula I may be prepared by reacting a compound of formula <FORM:0730489/IV (c)/3> wherein Y is an acid radical with a compound of formula <FORM:0730489/IV (c)/4> wherein Q is a thioether or acetanilide group. The dyes of formula II may be prepared by reacting a compound of formula III with a heterocyclic keto-methylene compound in the presence of an alkyl orthoformate or alkyl ortho acetate. Symmetrical dyes of formula I are obtained by reacting two mols. of a compound of formula III with an alkyl orthoformate. In place of the quaternary salt of formula III there may be used a compound of formula <FORM:0730489/IV (c)/5> and two molecular equivalents of a salt R4Y (in which case R3 = R4) and instead of the quaternary salt of formula IV the corresponding base may be used together with a quaternizing salt R5X. D1 may complete a nucleus such as thiazole or oxazole and their benzene and naphthalene homologues, quinoline, indolenine, diazines such as pyrimidine, diazoles such as thio-b ,b 1-diazole, pyrazolenine and iminazolenine. The carbocyclic rings of such nuclei may be substituted with alkyl, aryl, alkoxy, methylene dioxy or halogen radicals. D2 may complete a rhodanine, pyrazole-5-one, thiohydantoin or thiazolidene (e.g. with R6, a benziminazothiazolidone) nucleus. According to the Provisional Specification the nucleus D1 may also be selenazole, an acenaphthene or anthracene homologue of thiazole, oxazole or selenazole, pyridine, a - and b -naphthoquinolines, lepidine, quinazoline, oxazoline, thiazoline, or selenazotine, and D2 may be oxarhodanine or an N-hydrocarbon derivative thereof, oxindole, hydantoin, pseudohydantoin or pseudothiohydantoin. Further, formula II is given wherein the two nuclei are joined by = (CH-CH)p, where p is a positive integer, e.g. 1 or 2. It is stated that the carbocyclic rings of the nuclei D1 may also be substituted with amino or hydroxy groups, that Q in formula IV may be an amino or substituted amino group, and that R1, R2 and R3 may be hydrocarbon groups, R4 may be alkyl or aralkyl and R5 may also be aralkyl, hydroxyalkyl or carboxyalkyl.ALSO:4 : 4 : 5 - trimethyl - 3 - pyrazolone is prepared by heating ethyl a ,a -dimethylacetoacetate and hydrazine hydrate under reflux, and removing the ethanol and water formed. 4 : 4 : 5 - trimethylpyrazolenine - 3 - thiol is prepared by adding phosphorus pentasulphide to 4 : 4 : 5-trimethyl-3-pyrazolone in dry xylene. 3 - Methylthio - 4 : 4 : 5 - trimethylpyrazolene is prepared by adding dimethyl sulphate to 4 : 4 : 4 : 5 - trimethylpyrazolenine - 3 - thiol dissolved in sodium hydroxide. Similarly, ethyl a : a - diethylacetoacetate yields 4 : 4 - diethyl - 5 - methyl - 3 - pyrazolone and the corresponding -3-thiol.
GB2877252A 1952-11-14 1952-11-14 Improvements in or relating to cyanine and merocyanine dyes Expired GB730489A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2877252A GB730489A (en) 1952-11-14 1952-11-14 Improvements in or relating to cyanine and merocyanine dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2877252A GB730489A (en) 1952-11-14 1952-11-14 Improvements in or relating to cyanine and merocyanine dyes

Publications (1)

Publication Number Publication Date
GB730489A true GB730489A (en) 1955-05-25

Family

ID=10280906

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2877252A Expired GB730489A (en) 1952-11-14 1952-11-14 Improvements in or relating to cyanine and merocyanine dyes

Country Status (1)

Country Link
GB (1) GB730489A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007114398A1 (en) * 2006-03-31 2007-10-11 Wako Pure Chemical Industries, Ltd. Pyrazole-type cyanine dye

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007114398A1 (en) * 2006-03-31 2007-10-11 Wako Pure Chemical Industries, Ltd. Pyrazole-type cyanine dye
US8921124B2 (en) 2006-03-31 2014-12-30 Wako Pure Chemical Industries, Ltd. Pyrazole-based cyanine dye

Similar Documents

Publication Publication Date Title
GB489335A (en) Improvements in or relating to the manufacture and use of dyestuffs suitable for sensitising photographic emulsions
GB412309A (en) Manufacture of dyes and intermediates therefor, and photographic emulsions sensitised therewith
GB549202A (en) Improvements in or relating to dyestuffs and dyestuff intermediates
GB438603A (en) Manufacture of carbocyanine dyestuffs
GB970601A (en) Improved direct positive emulsions
GB700734A (en) Improvements in sensitized photographic emulsions and in sensitizing dyes therefor
GB584609A (en) Improvements in or relating to photographic light-sensitive materials
GB730489A (en) Improvements in or relating to cyanine and merocyanine dyes
GB654690A (en) Improvements in cyanine dyes and photographic emulsions containing the same
US2490572A (en) Rhodacyanine dyes and a method of preparing the same
GB549203A (en) Improvements in or relating to dyestuffs
US2471488A (en) Cyanine dyestuffs
GB1093938A (en) Process for the preparation of cyanine and merocyanine dyes
GB753637A (en) Merocyanine dyes containing a 2-thiohydantoin nucleus and photographic emulsion sensitised therewith
US2161331A (en) Merocyanines and a process for the preparation thereof
GB811876A (en) Improvements in or relating to cyanine dyestuffs
US2535994A (en) Process of preparing trinuclear cyanine dyes containing a terminal 5-and 6-membered heterocyclic ring system
GB636738A (en) Polymethine dyes
GB641805A (en) Process of producing cyanine dyes
GB734799A (en) Improvements in or relating to polynuclear cyanine dyes
GB849741A (en) Improvements in or relating to hemicyanine dyestuffs
US2535992A (en) Thiazolone cyanine dye intermediates
GB640127A (en) Improvements in or relating to the production of cyanine dyestuffs and to the sensitising of photographic emulsions
Jeffreys 675. Oxazole cyanine and mero cyanine dyes, and intermediates. Part II. Intermediates derived from desylamines (1: 2-diaryl-2-oxoethylamines)
GB829790A (en) Improvements in or relating to merocyanine dyes