N-[3-(Diethylamino)propyl]-4-(4-hydroxyphenyl)-5-phenyl-1H-pyrazole-1-acetamide


专利号: US04988725

A solution of 14 g (00.33 mol) of N-[3-(diethylamino)propyl]-4-(4-methoxyphenyl)-5-phenyl-1H-pyrazole-1-acetamide of example 34 and 0.16 mol of the sodium salt of 1 propanethiol in 375 mL of DMF was heated at 155°-160° C. for 2 hours. The reaction was chilled and the excess thiopropoxide was neutralized with ethanolic HCl. The DMF solution was stripped under vacuum at 30°, dissolved in methylene dichloride, and washed with aqueous sodium carbonate, then water, and finally brine. The methylene ch