COMMUNICATIONSreaction inixture allixccd to stir at thih temperature. After 15 minutes, diethyl ether (10 m L) was condenscd onto the inixture. and I precipitated as acolorlesssolid. The liquid w a s decanted into the second iirin of the Schlenk vessel, the volatiles were pumped off undcr dynamic wxuum ;it --3O"C. and the solid was then allowed to bcarm slo~.ly to rooin tcmperature. 2. 3: After addition of the ether at -35 C a second phase was formed which was dccantrd into the second iirni of the reaction vessel. The workup of the residue was carried out as described for I .
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