Taiyo Fine Chemicals

Sulfonation

Content Reaction formula Concrete structure Remarks
Sulfonation with sulfuric acid or sulfuric acid,fuming
  • Sulfonated Reaction formula
  • Sulfonated structure 1
  • Sulfonated structure 2
  • Sulfonated structure 3
We have a sulfuric acid,fuming tank, and we can handle various problems.

Halogenation

Content Reaction formula Concrete structure Remarks
Bromination with bromine or NBS(N-Bromosuccinimide)
  • Halogenated Reaction formula1
  • Halogenated structure 1
  • Halogenated structure 2
Chlorination with phosphorus oxychloride or thionyl chloride
  • Halogenation reaction 2
We have a lot of experience using phosphorus oxychloride
Halogenation by Sandmeyer reaction
  • Halogenation reaction 3

Oxidation

Content Reaction formula Concrete structure Remarks
Oxidation of Aromatic Methyl Groups with Potassium Permanganate
  • Oxidative Reaction formula
  • Structure of oxidation

Reduction

Content Reaction formula Concrete structure Remarks
Hydrogenation of nitro group with palladium carbon catalyst
  • Reduction Reaction formula1
  • Structure of Reduction 1
  • Structure of Reduction 2
We have a kettle for hydrogen addition and have a lot of manufacturing experience. We can choose the best route according to the conditions.
Reduction of nitroso groups with hydrazine
  • Reduction Reaction formula2
  • Structure of Reduction 3
Reduction of azo groups with hydrazine
  • Reduction Reaction formula3
  • Structure of Reduction 4
  • Structure of Reduction 5

Alkylation

Content Reaction formula Concrete structure Remarks
Methylation of amino groups with dimethylsulfate
  • Alkylation Reaction formula1
  • Alkylation structure 1
We have a lot of experience using dimethylsulfate
Alkylation of amino groups with alkyl halides
  • Alkylation Reaction formula2
  • Alkylation structure 2

Friedel-Crafts Reaction

Content Reaction formula Concrete structure Remarks
Alkylation
  • Friedel-Crafts Reaction Reaction formula
  • Structure of Friedel-Crafts reaction 1
  • Structure of Friedel-Crafts reaction 2
  • Structure of Friedel-Crafts reaction 3
We have a lot of experience using aluminum chloride and zinc chloride.
Acylation
  • Friedel-Crafts Reaction Reaction formula2

Nitrilation

Content Reaction formula Concrete structure Remarks
Nitration of aldoxime (amide) by dehydration
  • Nitrilation reaction formula 1
  • Nitrilation reaction formula 2
  • Nitrilation structure 1
  • Nitrilation structure 2
  • Nitrilation structure 3

Azo-dye Synthesis

Content Reaction formula Concrete structure Remarks
Azo coupling reaction
  • Reaction formula for azo dye synthesis 1
  • Reaction formula for azo dye synthesis 2
  • Structure of azo dye synthesis 1
  • Structure of azo dye synthesis 2
  • Structure of azo dye synthesis 3
We have a lot of experience by diazonation not only with sodium nitrite but also with nitrosyl sulfuric acid.

Condensation, Cyclization

Content Reaction formula Concrete structure Remarks
Synthesis of leuco dye
  • 縮合環化のReaction formula1
  • 縮合環化の構造1

Nitrosation

Content Reaction formula Concrete structure Remarks
Nitrosation with nitrite salt
  • Nitrosated Reaction formula1
  • Nitrosated Reaction formula2
  • Structure of nitrosation 1
  • Structure of nitrosation 2
  • Structure of nitrosation 3

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