GB684625A - Improvements in or relating to dyestuff intermediates - Google Patents

Improvements in or relating to dyestuff intermediates

Info

Publication number
GB684625A
GB684625A GB686350A GB686350A GB684625A GB 684625 A GB684625 A GB 684625A GB 686350 A GB686350 A GB 686350A GB 686350 A GB686350 A GB 686350A GB 684625 A GB684625 A GB 684625A
Authority
GB
United Kingdom
Prior art keywords
bis
general formula
methiodide
alkyl
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
GB686350A
Inventor
Douglas James Fry
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 GB686350A priority Critical patent/GB684625A/en
Publication of GB684625A publication Critical patent/GB684625A/en
Expired legal-status Critical Current

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  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)

Abstract

Dye intermediates of the general formula <FORM:0684625/IV (b)/1> wherein R1 and R2 each represent an alkyl, hydroxyalkyl, or aralkyl group, D represents the residue of a 5- or 6-membered heterocyclic ring system, and n is 0 or 1, are prepared by reacting two molecular proportions of a heterocyclic base of the general formula <FORM:0684625/IV (b)/2> with an excess over one molecular proportion of a compound of the general formula <FORM:0684625/IV (b)/3> wherein R3 is alkyl, aralkyl, or aryl and R4 is or as R3, in the presence of an excess over three molecular proportions of an alkyl toluene-sulphonate of the general formula <FORM:0684625/IV (b)/4> The reaction of the heterocyclic base with the intermediate <FORM:0684625/IV (b)/5> is referred to. 2-b : b -Bis-methylthiovinylbenzthiazole methiodide is prepared by heating together 2 - methylbenzthiazole, methyl p - toluenesulphonate, and methyl phenyldithiocarbamate, dissolving in ethanol, and pouring into aqueous KI. 2-b : b -Bis-ethylthiovinylbenzthiazole ethiodide, 2-b : b -bis-methylthiovinylbenzoxazole methiodide and 2-b : b -bis-methylthiovinylbenzthiazole methiodide are similarly prepared. Specifications 549,201, 549,202, 549,203, 549,204, 623,990; 678,626, 681,736 and 684,622, [all in Group IV (c)], are referred to.
GB686350A 1950-03-20 1950-03-20 Improvements in or relating to dyestuff intermediates Expired GB684625A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB686350A GB684625A (en) 1950-03-20 1950-03-20 Improvements in or relating to dyestuff intermediates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB686350A GB684625A (en) 1950-03-20 1950-03-20 Improvements in or relating to dyestuff intermediates

Publications (1)

Publication Number Publication Date
GB684625A true GB684625A (en) 1952-12-24

Family

ID=9822134

Family Applications (1)

Application Number Title Priority Date Filing Date
GB686350A Expired GB684625A (en) 1950-03-20 1950-03-20 Improvements in or relating to dyestuff intermediates

Country Status (1)

Country Link
GB (1) GB684625A (en)

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