114 Mr Jones, Some substituted ammonium compounds, etc. 



obtained. This salt, which is very soluble in cold alcohol, crystal- 

 lises from a mixture of alcohol and ether in colourless prisms very 

 similar to those of the iodide, which melt at 160-1°. Although 

 the chloride is not so readily formed as the iodide it appears to be 

 more stable ; the iodide when boiled with alcohol smells strongly 

 of benzyl iodide, whilst the chloride does not seem to be affected 

 by similar treatment ; no odour of benzyl chloride was noticed. 



All attempts to prepare the compound of dibenzylaniline and 

 methyl iodide have hitherto failed. There is no visible action 

 between the compounds at the ordinary temperature. On heating 

 the mixture to 100° in a sealed tube a reaction takes place with 

 the unexpected and somewhat remarkable result, that, instead of 

 the desired compound, phenyltrimethylammonium iodide was ob- 

 tained. The two benzyl groups have been removed as benzyl 

 iodide and three methyl groups and an iodine atom added on. 



Phenylmethyldibenzylammonium Dextro-camphorsidphonate was 

 prepared from the iodide by the method already described. It is a 

 colourless salt sparingly soluble in all solvents except chloroform, 

 alcohol and methylene-diethylether. When crystallised from a 

 mixture of chloroform and benzene it forms colourless needles 

 which shew a great tendency to form aggregates, melt, not very 

 sharply, between 135° and 138° and contain a molecule of chloro- 

 form of crystallisation. 



The corresponding dextro-bromcamphorsulphonate was ob- 

 tained in the same way, using the silver salt of Kipping and 

 Pope's dextro-bromcamphorsul phonic acid. It was at first obtained 

 as a gum which after rubbing several times with ether and 

 standing over sulphuric acid solidified. It however separates 

 from solvents in a gummy form and has not yet been obtained 

 crystalline. 



