OP ARTS AND SCIENCES. 233 



By allowing phosphorpentoxide to react upon chlorbenzol and 

 benzoic acid, or brombeuzol and benzoic acid, Kollarits and Merz * 

 bave obtained a chlorbenzopbeuone (needles from etber-alcobol, m.pt. 

 75.5-76°), and a broinbenzophenone (radiating forms, m.pt. 81°. 5), 

 probably identical with our parachlor and parabrom compounds above 

 described. This would indicate that the carbonyl group of the acid 

 anhydride assumes the para position with respect to the substituting 

 negative radical of the hydrocarbon. 



We have endeavored to carry out the same reaction, using nitro- 

 benzol and metadinitrobeuzol as substituting factors, but without result, 

 notwithstanding our efforts to improve the course of the reaction by 

 changing the amounts of materials employed and by heating at vari- 

 ous temperatures. 



* I3er. u. ck. G., VI. 047. 



