30 BIBLIOGRAPHY OF 



GABRIEL, S., 1881. 



Ber. 14, 919-927 ; J. Chem. Soc. 40, 733 ; Jsb. Chem. 1881, 798; 



Bull. Soc. chim. 36, 598. 



Condensation Products of Phthalic Anhydrid. 



Acetoacetic ester, phthalic anhydrid, Ce H4 (CO) 2 O, and sodium 

 acetate react together to form ortho-tri-benzoyl-benzene, C27 H12 O3, 

 and a compound, Ci, Hs O2. the composition of which is unknown 

 which boils at 209 to 211 Ortho-tribenzoyl-benzene has the constitu- 

 tion :— C CO 



/ \ I 

 C6 H4 — C C — Cf, H4 



CO C C— CO 



\ / i 



C Ce H4 



HANTZSCH, A., 1881. 



Ber. 14, 1637-1638; J. Chem. Soc. 40, 1028 ; Jsb. Chem. 1881, 586; 



Bull. Soc. chim. 36, 569. 



Condensation Product of Aldehyde=ammonia and Acetoacetic 



Ester, 



Acetoacetic ester treated with aldehyde-ammonia in presence of zinc 

 chlorid gives Ci4 H21 NO4 which melts at 131° and boils at 310.° Boiled 

 with hydrochloric acid it is entirely decomposed, treated with dry hy- 

 drochloric acid gas it gives two bases, d H17 NO2, and Cs H13 N. It 

 combines with bromin to form C14 Hjg Br4 NO4, and this treated with 

 nitric acid gives C,4 11,=, Br4 NO4, which melts at 102°. C14 H21 NO4 can 

 be oxidized to the base, C14 H19 NO4, which is the ester of collidine- 

 dicarboxylic acid and has the formula C5 N (C Hj), (CO2 C2 1^5)2. 



DEICHMULLER, A., 1881. 

 Ann. Chem. 209, 22-30 ; J. Chem. Soc. 4^, 1 162 ; J,sb. Chem. 1881, 1054. 



Diabetic Urine. 



The author decides that the substance in diabetic urine which 

 produces a red color with ferric chlorid is acetoacetic acid, not the ester 

 of that acid because by acidification and distillation acetone but no 

 alcohol is obtained. 



