56403-43-1

Upstream product

• 50987-90-1 1,4-bis(chloromethyl)-2,5-dichlorobenzene 
• 143-33-9 sodium cyanide 
• 19036-27-2 2,5-dichloro-α,α'-dibromo-p-xylene 
• 151-50-8 potassium cyanide 
• 13799-90-1 2,5-dichloroterephthalic acid 
• 2800-99-9 2,5-dichlorobenzene-1,4-dimethanol 
• 1124-05-6 1,4-dichloro-2,5-dimethylbenzene 

Downstream Products

• 21004-03-5 2,5-dichloro-7,7,8,8-tetracyano-p-quinodimethane 
• 21004-02-4 Dimethyl α,α,α',α'-Tetracyano-2,5-dichlor-p-phenylendiacetat 

Relevant academic research and scientific papers

Ruthenium-catalyzed knoevenagel condensation: A new route toward cyano-substituted poly(p-phenylenevinylene)s

The ruthenium-catalyzed Knoevenagel reaction was developed for the preparation of cyano-substituted conjugated polymers. The polymerization was quenched by pouring the reaction mixture into methanol. The structures of polymers were confirmed by spectroscopic studies and elemental analysis. The results show that Knoevenagel polycondensation mediated by transition metal complexes enjoys the advantages of neutral and mild reaction conditions.

Electron Acceptor Molecules: New, Expedient Synthesis of Substituted 7,7,8,8-Tetracyano-p-quinodimethane (TCNQ) Derivatives and the X-Ray Crystal Structure of 2,5-Dibromo-TCNQ

A range of TCNQ derivatives, viz. 2,5-dichloro, 2,5-dibromo-, 2,5-dimethoxy-, 2-methoxycarbonyl- and benzo-TCNQ, and 11,11,12,12-tetracyanonaphtho-2,6-quinodimethane (TNAP), have been efficiently synthesised using 2-chlorobenzylthiocyanate as the source o