Study on the Synthesis of 4-n-Pentyl-4′-cyano-terphenyl

n Pentyl 4′ Cyano Terpheny could be synthesi zd by F C reaction(yield 80%),reduction(yield 60%),iodination(yield 55%)and cya nidation(yield 60%)of terphenyl.In comparison with the old synthetic routes,the temperature of reduction was changed and the purification of the final compound was simplified.Using this method,the progress was shorted,the operation was easy to operated,and the yield was improved.