16 
Another portion of the ethereal solution of the crude azodye was 
treated in the following way. After evaporating the ether the resi- 
due was dissolved in alcohol, water and sodium hydrate added and 
the whole heated gently for some time. A brown solution resulted in 
which were noticed reddish particles undissolved. The latter were 
filtered off and washed with a week solution of sodium hydrate, 
diluted aleohol and finally with water. The optical properties of this 
substance correspond exactly to those of haemopyrroline-disazo-di- 
benzene. Unfortunately the colouring matter would not erystallize 
and consequently it eould not be identified absolutely with the cor- 
responding derivative of haemopyrroline. We shall endeavour to pre- 
pare in the near future larger quantities of this very costly synthe- 
tical product in the hope to be able to purify it better and to in- 
duce it to asume a erystalline shape in the form of its hydrochlo- 
ride. It would be very surprising if our synthetical produet should 
prove despite its identical optical properties with haemopyrroline- 
disazo-dibenzene, to be not identical with the latter. 
3. M. ST. NIEMENTOWSKI m. ec. Oksychinakrydyna i florchinyl. (Oxychi- 
nakridin und Phlorchinyl). (Oxychinacridine et phlorquinoléine). 
Es wurde hier ein neuer Weg der Darstellung der Chinakri- 
dinderivate durch Kondensation des o-Aminobenzaldehyds mit Phloro- 
gluein gefunden. Der Einwirkungsmodus beider genannten Körper 
wurde in alkalischer Lösung bereits im Jahre 1892 von J. Elias- 
berg und P. Friedländer!) untersucht, welche zu dem Resultat 
gelangt sind, daß dabei das 1, 3-Dioxyakridin 
OH 
CHA 
7 SAN? > 
| 
da\a a 
entsteht. Bei Anwendung von zwei Molekeln o-Aminobenzaldehyd 
auf je eine Molekel Phlorgluein bildet sich nach meinen Unter- 
1) J. Eliasberg und P. Friedländer: Ber. d. chem. Ges. 25. 1758 [1892]. 
