Recrystallization from 1700 ml. of diethyl ether gave 0.39 g. of white solid, m.p. 97-111°, [«]S6d +35°( 0.25% in water), "®,1 268 m¡u (£ 8840), 268 µ (« 4900), X°l,e 268(e 7260).The material traveled as one component in solvent A with R"d 1.81. In solvent C, it travelled as an elongated spot with fim 1.29-1.37.
was taken to dryness in vacuo.To the residue was added a solution of 15 g. of sodium acetate in 200 ml. of water. After stirring for a few minutes a colorless amorphous solid was collected and washed with water. The yield was nearly quantitative. The solid was purified by precipitating from an ether solution with petroleum ether, m.p. 90-140°( efferv.), [a]24D +5°(c 0.2, acetone). Ultraviolet absorption properties in ethanol were Xmai 255, 229.5 ma; Xmin 246.5 nu>; ratio 260/230 me 0.63.
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