GB604217A - Improvements in or relating to cyanine dyestuffs and to photographic silver halide emulsions sensitised therewith - Google Patents

Improvements in or relating to cyanine dyestuffs and to photographic silver halide emulsions sensitised therewith

Info

Publication number
GB604217A
GB604217A GB1687645A GB1687645A GB604217A GB 604217 A GB604217 A GB 604217A GB 1687645 A GB1687645 A GB 1687645A GB 1687645 A GB1687645 A GB 1687645A GB 604217 A GB604217 A GB 604217A
Authority
GB
United Kingdom
Prior art keywords
cyclohexenone
ethylthio
methyl
refluxing
toluenesulphonate
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
GB1687645A
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 GB1687645A priority Critical patent/GB604217A/en
Publication of GB604217A publication Critical patent/GB604217A/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
    • C09B23/0066Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain being part of a carbocyclic ring,(e.g. benzene, naphtalene, cyclohexene, cyclobutenene-quadratic acid)

Landscapes

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

Abstract

Symmetrical cyanine dyes are prepared by condensing a cyclohexane 1 : 3-dione, a D 2 : 3-(3-alkylthio)-cyclohexenone (1) or a D 2 : 3-(3-aralkylthio)-cyclohexenone (1) with an alkyl or aralkyl quaternary salt of a thiazole or selenazole or polycyclic homologue, a thiazoline selenazoline, diazine, or diazole or with rhodanine or a N-hydrocarbon substituted derivative, or with an oxindole, pyrazole-5-one, hydantoin, thiohydantoin, pseudohydantoin, or pseudothiohydantoin by heating together in presence of a base, preferably in presence of a solvent for the reactants. The D 2 : 3-(3-alkylthio)-cyclohexenone (1) may be one of those of Specification 595,783. In examples, dyes are prepared (1) by fusing together D 2 : 3-(3-ethylthio-5 : 5-dimethyl)-cyclohexenone (1), 1-methylbenzthiazole, and methyl p-toluenesulphonate, and pyridine and refluxing, adding triethylamine and further refluxing, and pouring into aqueous KI solution; (2) as in (1), using ethyl p-toluenesulphonate; (3) as in (2), using 1-methyl-4-chlorobenzthiazole; (4) as in (2), using 1-methylbenzselenazole; (5) by fusing together 5 : 5-dimethylcyclohexane dione (1 : 3), 1 : 4-dimethylbenzthiazole and ethyl p-toluenesulphonate, adding pyridine and triethylamine and refluxing, and pouring into aqueous KI solution; (6) as in (2), using D 2 : 3 - (3 - ethylthio - 5 - methyl) - cyclohexenone (1); (7) as in (2), using D 2 : 3-(3-ethylthio-5-phenyl)-cyclohexenone (1); (8) as in (5), using 5-phenylcyclohexane dione (1 : 3); (9) by fusing together D 2 : 3-(3-ethylthio-5 : 5-dimethyl)-cyclohexenone (1) and 1-phenyl-3-methyl-5-pyrazolone, adding pyridine and refluxing, adding triethylamine and refluxing, and acidifying; (10) as in (9), using N-methylrhodanine; (11) as in (6), using 1-methyl-4-chlorobenzthiazole; and (12) as in (2) using D 2 : 3-(3-ethylthio)-cyclohexenone (1).
GB1687645A 1945-07-03 1945-07-03 Improvements in or relating to cyanine dyestuffs and to photographic silver halide emulsions sensitised therewith Expired GB604217A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1687645A GB604217A (en) 1945-07-03 1945-07-03 Improvements in or relating to cyanine dyestuffs and to photographic silver halide emulsions sensitised therewith

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1687645A GB604217A (en) 1945-07-03 1945-07-03 Improvements in or relating to cyanine dyestuffs and to photographic silver halide emulsions sensitised therewith

Publications (1)

Publication Number Publication Date
GB604217A true GB604217A (en) 1948-06-30

Family

ID=10085264

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1687645A Expired GB604217A (en) 1945-07-03 1945-07-03 Improvements in or relating to cyanine dyestuffs and to photographic silver halide emulsions sensitised therewith

Country Status (1)

Country Link
GB (1) GB604217A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5296343A (en) * 1990-10-08 1994-03-22 Fuji Photo Film Co., Ltd. Silver halide photographic emulsion and full color recording material containing the same
US5518876A (en) * 1992-12-16 1996-05-21 Eastman Kodak Company Red sensitizers for high silver chloride emulsions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5296343A (en) * 1990-10-08 1994-03-22 Fuji Photo Film Co., Ltd. Silver halide photographic emulsion and full color recording material containing the same
US5518876A (en) * 1992-12-16 1996-05-21 Eastman Kodak Company Red sensitizers for high silver chloride emulsions

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