In this paper,a novel synthesis precedure of p-tert-butoxycarbonyloxystyrene(PTBOCS) was achieved.At first phenolic hydroxyl of p-ethylphenol as original reactant was protected with tert-butoxycarbonyl(t-BOC),then was sequently α-bromizated and β-eliminated to obtain the target product.The yields of p-tert-butoxycarbonyloxybenzylethane and 1-bromo-1-(p-tert-butoxycarbonyloxybenzyl)ethane were 98% and 65%,respectively, while the yield of PTBOCS was 60%.It shows that the reaction can be carried out under a wi...