Dichloro-[2,2]-paracyclophane. Methods for Synthesis

Methods for synthesis of dichloro-[2,2]-paracyclophane (dichloroPCP) are discussed. DichloroPCP is a valuable monomer to prepare polymer coats for electronics. This monomer is not produced in Russia. Analysis of available synthetic techniques leads to conclude that the Hofmann method for cleavage of quaternary ammonium salts is the most appropriate for the industrial production. Application of catalytic technologies – alkali catalysis and catalysis by Lewis acids – is the promising way for practical implementation of this four-stage process.