SULPHURIC ACID ON DIALLYL. 3 



according to the following analyses, its composition is ex- 

 pressed by the formula C 6 H I2 : — 



(i) 0*3313 substance gave 0*869 carbonic acid, and 0-3620 water. 

 (2) 0-2758 „ „ 0-726 „ „ 0-2882 „ 



Found. Calculated for 



(1). (2). C 6 H 12 0. 



C 71*53 7i*79 72-00 



H 12*13 u*6o 12*00 



O 16*00 16-00 16*00 



99*66 99*39 100-00 



This substance is readily soluble in concentrated sulphuric 

 and fuming hydriodic acids, and slightly so in water. It 

 is unacted upon by either caustic potash or potassium, and 

 possesses a strong etherial odour like that of peppermint. 

 In presence of potassium bichromate and sulphuric acid, 

 this substance yields a blue colour, similar to that pro- 

 duced by per chromic acid and common ether. 



This compound has already been obtained by Wurtz 

 (Ann. Chem.Phys. (4) iii. 174) by treating di-iodhydrate of 

 diallyl with silver oxide. He calls it diallyl monohydrate, 

 but says, further on, that this body comports itself as an 

 oxide or anhydride (ether), corresponding to dihydrate of 



diallyl 6 I2 L 2 , standing to the latter in the same rela- 

 tion as hexylene oxide to hexylene glycol ; and he therefore 

 proposes to call this compound hexylene pseudoxide. As I 

 have shown that it is not acted upon by potassium, this 

 view of Wurtz's is correct ; it cannot be a hydrate ; and I 

 therefore decide to adopt Wurtz's name and to call it 

 pseudoxide of hexylene. 



It is of interest that while the action of sulphuric acid 

 on diallyl (C 6 H IO ) produces C 6 H IO . H a O, the action of 

 sulphuric acid on valerylene (C 5 H 8 ) produces (C 5 H 8 ) 2 H z O. 

 (Reboul, ' Comptes Rendus/ vol. lxiv. p. 419.) This renders 

 it important that this reaction should be investigated in 



b 2 



