A NOVEL PROCESS OF PREPARING 1,4-BIS (2 METHYL STYRYL) BENZENE AND 1, 4-BIS (2 METHYL STYRYL) BENZENE OBTAINED THEREFROM

摘要

This invention relates to a process of preparing 1,4- bis (2methyl styryl ) benzene of formula (I) as shown below comprising reacting 2 methyl benzyl triphenyl phosphonium halides of formula (III) as shown below wherein X is CI, Br or I with terephaldicarboxaldehyde of formula (II) in the presence of suitable base and solvent at l0 deg C to 180 deg C. In the above process the various bases which can be used are sodium ethoxide, potassium tert.butoxide, sodium tert.butoxide, lithium ethoxide, potassium ethoxide and sodium methoxide. In the above process the various solvents which can be used are methanol, xylene, toluene, ethanol, dimethylformamide and dimethyl sulfoxide.