Mr Ruhemann, The Action of Acidchlorides, etc. 315 



and the yellow salts : 



OC— CH.0 6 H 5 



\ 



. OMe' 



OC— c 

 This view leads to the conclusion that the arrangement 



— CO.C(OH) = 



gives rise to the formation of blue salts, whilst yellow salts are 

 produced, if the carbinol group occupies the /3-position towards 

 the ketonic group : 



— C(OH)— C— CO— . 

 I 

 A number of compounds with the latter arrangement are known, 

 and they dissolve in alkalis or their carbonates to yield yellow 

 solutions. In the light of this view concerning the constitution 

 of the blue and yellow salts of oxalyldibenzylketone, the various 

 derivatives of this compound which Claisen and Ewan obtained, 

 can readily be formulated, and these formulae are found to be in 

 close agreement with the behaviour of those substances. 



