SYNTHESIS OF 2,4-DIHYDROXY-1,5-DIPHENYL-PENTANE-1,5-DIONE AND ITS REACTIONS WITH UREAS

2,4-Dihydroxy-l, 5-diphenyl pentane-l, 5-dione (3b) has been synthesised by the hydrolysis of 2,4-dibromo-l, 5-diphenyl pentane-l, 5-dione in 75% aqueous acetone containing silver oxide acting as catalyst. During hydrolysis compound (5) is obtained alongwith (3b). The reaction mechanism pertaining to formation of compound (3b) is also proposed. The structural elucidation of compounds (3b,5) has been done by spectroscopic techniques. Unfortunately our target compound (3b) does not react with urea and its alkyl derivatives. It is also possible that steric factors playa part in making (3b) unreactive. 

I HUSSAIN ,A MUIR ,M M CHAUDHRY ,A R BUTLER ,