Preparation of Anhydrous Tosylate Salts

Anhydrous tosylate salts can be prepared by heating the corresponding hydrated salts under vacuum to 160°C for 1 h. Yields are nearly quantitative. Infrared data for these compounds are shown in Table El. 

TABLE ni. Infrared Data for the Anhydrous Tosylate Salts  

The anhydrous tosylate salts are soluble in methanol and water, but are insoluble in acetonitrile and diethylether. 

Guerrero, M. A. Martinez-Zaporta, and A. Ramirez, Thermochim. Acta 146, 341-252 (1989). 

Submitted by KIM K. DUNBAR, JOHN J. LONGRIDGE, JEREMY M. RAWSON,t and JUI-SUI SUN Checked by KARL S. HAGEN and BAO DO  

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