Zhejiang Dragon Chemical Group Company

Strong Technology

Sulfonation:

Chloro-Sulfonation:

Nitration:

Nitrosation:

Acetylation:

Reduction:

Hydrogenation (Catalyst:Ni,Pd/C,Pd/Al2O3,Rh/C):

High Technology/Cost Reduction:

Halogenation:
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α-H halogenation:

Condensation:

Amination:

Hydrolysis:

Hydrolysis Carboxylation:

Saponification:To top

Esterfication:

Desulfonation/Desulfonamide:

Oxidization:

Alkyloxydization:

N-Alkylation:

Sulfuration:

CO Insertion:

Friedel-Crafts:

Addition Cyclization:

Ring-opening addition:

Phosgenation/Triphosgenation:
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Diazo-coupling:

Others:
Recrystallization, Decrease Metal Content Of Product
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