64 W. G. OVEREND AND M. STAGEY 



reported^^^ of the solid state transformation in tetra-O-acetyl-D-ribofur- 

 anose (cf. Davoli et alP'' and Farrar^"*). 



The hydrolysis of tri-0-benzoyl-,S-D-ribofuranosyl bromide gives not 

 only 2,3,5-tri-0-benzoyl-/3-D-ribose as previously reported but also a 

 substance which is most probably 3,5-di-O-benzoyl-l ,2-0-(l-hydroxy- 

 benzylidine)-a-D-ribose.^''° The compound designated by Weygand and 

 Wirth^^^ as 2,3,5-tri-O-benzoyl-D-ribose has been shown to be identical 

 with 3 ,5-di-O-benzoyl-l ,2-0-(l-hydroxybenzylidine)-a-DTribose. 



'" A. L. Patterson and Barbara P. Groshens, Nature 173, 398 (1954). 



34" R. K. Ness and H. G. Fletcher, Jr., J. Am. Chem. Soc. 76, 1663 (1954). 



3"' F. Weygand and F. Wirth, Chem. Ber., 85, 1000 (1952). 



3« M. Viscontirii, R. Hochreuter, and P. Karrer, Helv. Chim. Acta 36, 1777 (1953). 



3« W. A. van Ekenstein and J. J. Blanksma, Chem. Weekblad 4, 743 (1907). 



3" K. Rehorst, Annalen 503, 143 (1933). 



3« C. S. Hudson and S. Komatsu, J. Am. Chem. Soc. 41, 1141 (1919). 



3« R. A. Weerman, Rec. Trav. Chem. 37, 16 (1917). 



3" T. Brady, Biochem. J. 35, 855 (1941). 



3« A. M. Gakhokidze, Zhur. Obschei Khim. 10, 497 (1940). 



