23995-94-0Relevant articles and documents
Mild electrophilic halogenation of chloropyridines using CCl4 or C2Cl6 under basic phase transfer conditions
Joshi, Ashutosh V.,Baidossi, Mubeen,Qafisheh, Nida,Chachashvili, Elsa,Sasson, Yoel
, p. 5061 - 5063 (2007/10/03)
Effective chlorination of 2,3,5,6-tetrachloropyridine to pentachloropyridine was realized under mild phase transfer conditions with carbon tetrachloride and 50% NaOH or solid K3PO4. Mechanistic study of this reaction indicated the possibility of an aromatic carbanionic intermediate. Hexachloroethane was established as a more selective electrophilic chlorination agent.