reduced pressure and dried in vacuum at a temperature of from 90 u02dc 92 u00b0 c to remove the solvent and water and finally filtered to obtain the subject compound yield 85 50 the physiochemical properties of the resultant compound were as follows appearance yellow liquid observed with the naked eye visicosity 4 25 u00b0 c 1990 cps refractive index n 25 d 1 56526 into one liter flask equipped with an air inlet a mechanical stirrer a water separating line a condenser and a heating apparatus were added with 346 4 g of propyleneoxy 10 1 1 bi 2 naphthol the above formula ii wherein the sum of y and y u2032 is equal to 10 and both x and x u2032 are zero 63 36 g of acrylic acid 4 39 g of methane sulfonic acid 340 g of toluene as solvent 0 357 g of hydroquinone monomethyl ether and 0 179 g of nitrobenzene the mixture was heated to reflux for 14 hours and the generated water was collected to determine whether the reaction completed after completing the reaction the reaction mixture was cooled to room temperature and the organic layer was washed and neutralized with an appropriate amount of aqueous sodium hydroxide to remove the acid present in the mixture and the aqueous layer was discarded and the washing procedure was repeated once again to remove the aqueous layer the result organic layer was condensed under reduced pressure and dried in vacuum at a temperature of from 90 u02dc 92 u00b0 c to remove the solvent and water and finally filtered to obtain the.