452 M. Carius on a Saccharine Substance Jrom Benzole. 



were obtained, which, by their properties and by analysis, were 

 identified as angelic acid, C 10 H 8 4 . 



While the liquid, which in the above experiment had been 

 supersaturated with sulphuric acid, was being distilled, brownish- 

 red oily drops were formed which gradually sank to the bottom. 

 When these were purified, a body was obtained in a crystallized 

 condition which had many of the properties of an alcohol, and 

 which Feldmann calls laserole. 



The author found the composition of laserpitine to be 

 C 48 H 36 14 ; and its decomposition into laserole and angelic acid 

 is thus expressed : 



C 48 H 36 i4 + 2HO = C* 8 H 22 8 + 2C 10 H 8 O 4 . 



Laserpitine. Laserole. Angelic acid. 



Laserpitine has thus the same quantity of carbon as athaman- 

 tine and peucedanine, with which it agrees in general properties ; 

 and it is noticeable that these bodies all belong to one natural 

 botanical family. 



Some time ago Carius found* that benzole, Q 6 H 6 , united with 

 hypochlorous acid to form a compound, G 6 H 9 CI 3 O 3 . This body 

 he has succeeded f in transforming into a new saccharine sub- 

 stance, G 6 H 12 6 , which he calls phenose. The preparation of 

 the body, € 6 H 9 C1 3 3 , which he calls the trichlorhydrine of 

 phenose, is effected by shaking benzole with a solution of hypo- 

 chlorous acid. It is very difficult to obtain in any quantity, 

 owing to the facility with which the trichlorhydrine is oxidized 

 by the excess of hypochlorous acid. When pure, it crystallizes 

 in tolerably large but very thin laminse, which under the micro- 

 scope resemble benzoic acid. It melts at + 10°, and in the air 

 attracts moisture, forming brown tarry products. 



When this body is treated with caustic potash, it is decomposed, 

 with the formation of two substances. One of them, a new acid, 

 benzenic acid, which will be subsequently described, is almost 

 exclusively formed when the action is not moderated ; the other 

 is phenose, the formation of which is thus expressed : 



C 6 H 9 Cl 3 3 + 3KHO=G 6 'H 12 6 + 3KCl. 



Trichlorhydrine Phenose. 



of phenose. 



The action of potash is so violent, giving rise to secondary 

 products of decomposition, that its use had to be given up. The 

 best substitute is a dilute solution of carbonate of soda, which 

 yields phenose almost exclusively, though by a very roundabout 

 method, the description of which may here be omitted. 



* Phil. Mag. S. 4. vol. xxvi. p. 541. 

 t Liebig's Annalen, December 1865. 



