Tetrahydrofuran → 4'Chloro-2-[bis(p-dimethylaminophenyl)methoxy]acetanilide

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A solution of 4,4'-bis(N,N-dimethylamino)benzhydrol, methyl ether, (8.0 g, 0.028 mole), p-chloroglycolanilide (5.23 g, 0.028 mole), 170 ml of tetrahydro-furan, 120 ml of n-hexane, and 4.5 ml of glacial acetic acid was refluxed for about 8.5 hours, replacing solvent as distillate was removed. Color was then discharged by the addition of 20 drops of tetramethylguanidine and the solution was filtered hot. Hexane was added to the filtrate, yielding a light green oil. The oil was removed and the hexane solution, on cooling, gave a light blue solid. The solid was filtered, washed with petroleum ether and dried. Recrystallization from 150 ml methylcyclohexane/40 ml acetone gave a yellow-white, gummy solid. This was recrystallized from VM&P naphtha to give a fine white powder, mp 137.5°-140° C.

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