100 Proceedings of the Royal Irish Academij. 



0-2129 grm. of the ethyl ester gave 0-6196 grm. of CO, and 0-2536 grm. of 

 H;0, eorresponding to carbon 79-38 per cent, and hydrogen 1333 per cent. 



Cj-HsO- requires carbon 79-56 per cent., and hydrogen, 13-36 per cent. 



Ethyl montanate is very readily soluble in cold chloroform, and soluble 

 in cold benzene or petroleum ether. It is almost insoluble in cold ether, 

 acetone, alcohol, or acetic ester, but dissolves easily in these solvents on 

 wai-ming. It crystallises in curved needles. 



n-Propyl Montanate, CnHjiCOOCsH,. 



Three grms. of montanie acid were dissolved in about 25 c.cs. of normal 

 propyl alcohol, and the preparation proceeded with as in the case of the methyl 

 ester. The resulting ester was recrystallised several times from petroleum 

 ether, and, when pui-e, melted at 63-5° C. The yield was somewhat smaller than 

 in the previous cases. 



01993 gi-m. of the ester gave 0--5835 gi-m. of COj and 0-2377 grm. of 

 HiO, corresponding to carbon 7984 per cent, and hydi'Ogen 1335 per cent. 



C31IIS.O2 requires carbon 79*74 per cent, and hydrogen 13-39 per cent. 



7i-Propyl montanate crystallises in curved needles, and resembles the 

 ethyl ester in its solubilities. 



Prbpar.atioj? of Tbietiaey Alcohols. 



CH3\ 

 Dimethyl-lieptacosyl carhinol, CstHst-C . OH. 

 CH3/ 



0-5 grm. of clean magnesium ribbon was placed in a small, dry, conical 

 flask fitted with a dry reflux condenser, and about 20 c.cs. of anhydrous ether 

 added. 2-9 grms. of methyl iodide were then added, together with a small 

 particle of iodine. After a short time a vigorous reaction set in, the flask 

 being kept cooled in iced water. When all the magnesium had disappeared, 

 3-6 grms. of methyl montanate were gradually added. A reaction readily 

 took place between the ester and the " Grignard " compound. The mixture 

 was heated on a water-bath for several hours, and then allowed to stand 

 overnight. The compound thus obtained was decomposed by the addition of 

 s mall pieces of ice. It was then shaken up with dilute hydrochloric acid, and 

 extracted in a separating funnel with ether, in which the tertiary alcohol 

 is readily soluble. The ether was driven ofi", and the residue evaporated to 

 dryness with 50 c.cs. of semi-normal alcoholic potash. The tertiary alcohol 

 was extiueted from the dry mixture by means of warm petroleum ether. The 

 crude alcohol was recrystallised several times from petroleum ether, and 

 finally dried in a vacuum desiccator The yield was 75 per cent 



