0.34 g (1.0 mM) of 2-(4-hexylphenyl)-5-(4-hydroxyphenyl)-1,3-thiazole, 0.07 g of 85%-KOH and 12 ml of n-butanol were mixed. To the mixture, 0.29 g (1.0 mM) of 3-(trimethylsilyl)propyl p-toluenesulfonate was added dropwise under stirring at 100° C., followed by further stirring for 9 hours at 100° C. After the reaction, the reaction mixture was poured into water and extracted with ethyl acetate, followed by washing with water and drying with anhydrous magnesium sulfate. The magnesium sulfate in the resultant mixture was filtered off and the filtrate was condensed into a solid, followed by purification by silica gel column chromatography (eluent: toluene) and recrystallization from a mixture solvent (ethanol/ethyl acetate) to obtain 0.32 g of 2-(4-hexylphenyl)-5-[4-(3-trimethylsilylpropoxy)phenyl]-1,3-thiazole (Yield: 70.8%). ##STR81##
