preparation of phenylbenzoate by using phenol.

AIM:- To prepare phenylbenzoate by using phenol.

PROCEDURE:-  

·       1)  Dissolve 1g of phenol in 15ml of 10%NaOH solution contained in a strong wide mouthed bottle of about 50ml capacity,

·        2)     Then , add 2mL of benzoylchloride , cork the bottle securely and shake the mixture vigorously for 15min.

·        3)   At th end of ths time ,the reaction should be complete . A solid product obtained although a faint smell of benzoyl chloride persist , owinmg slight occlusion by solid product , absorption by cork.

·         4)  Filter of solid ester , breaking the lumps on fiklter paper with a spatula , then wash thoroughly with water and drain.

·         5)    Recrystallize the crude ester by methylated spirit (95% ethanol).

·          6) For this purpose using quantity of hot solvent approx.. twice the  minimum required for complete solution in order to ensure that phenylbenzoate doesnot separate until the temp. of solution has fallen below the melting point of ester.

·         7)  Filter the hot solvent , if necessary through a funnel preheated by filtration of some boiling solvent . phenybenzoate is obtained as colourless crystals.