Ryan and Dillon — On Hnjher Tertiary Alcohols. 241 



sand-bath. The residual solid matter was extracted with ether and the 

 tertiary alcohol thus obtained was recrystallized several times from petroleum 

 ether. Yield, 8'2 grammes. The following are the results of the analysis of 

 the compound : — 



0*231 gramme gave 0-6806 gramme of CO2 and 0'2914 gramme of H2O, 



corresponding to carbon, 80 '35 per cent. ; and hydrogen, 14"01 



per cent.; 0197 gramme gave 0'5802 gramme of CO2 and 0'2509 



gramme of H2O, corresponding to carbon 80'31 per cent. ; hydrogen 



14-15 per cent. ; C13H33O requires : carbon, 79-91 per cent. ; hydrogen, 



14-17 per cent. 



Dimethyl-pentadecyl carbinol is a white solid crystallizing in needles and 



melting at 35° C. It is soluble in alcohol, and very soluble in benzene, acetone, 



chloroform, ether, and petroleum ether. 



The details of the preparation of the other alcohols were exactly similar 

 to those described above for dimethyl-pentadecyl carbinol. 



Diethyl-Pentadecyl Carbinol. — 15 grammes of ethyl iodide, 2 grammes of 

 magnesium ribbon, 30 c.c. of ether, and 9 grammes of ethyl palmitate gave 

 3-8 grammes of tertiary alcohol. 



On an analysis, 0-1672 gramme of the compound gave 0"2112 gramme of 

 H2O, and 0-493 gramme of CO2, corresponding to carbon, 80-42 per cent... and 

 hydrogen, 14-18 per cent. 



C2oH4,0 requires : carbon, 80-44 ; hydrogen, 14-19. 



Diethyl-pentadeeyl Carbinol is a white solid crystallizing from petroleum 

 ether in fine curved needles. It melted at 34-35° C. 



Diplienyl-Pentadecyl Carbinol. — This compound was prepared from brom- 

 benzene (20-3 grammes), magnesium (3-15 grammes), ether (40 c.c), and 

 Methyl Palmitate (14 grammes). The reaction between the ester and the 

 magnesium-phenyl bromide was a vigoroiis one ; and a gelatinous solid 

 immediately separated from the ether solution. The alcohol having been 

 freed from unchanged ester in the usual manner was distilled with steam. By 

 this means a quantity of diphenyl formed during the reaction was removed, 

 the alcohol remaining behind in the flask. The latter was taken up with 

 ether ; the ether solution was dried over sodium sulphate ; and the compound 

 was recrystallized from petroleum ether until its melting-point was sharp. 

 Yield : 8 grammes. 



0-2174 gramme of the compound gave 0-2077 gramme of H2O, and 0'677 

 gramme of CO2, corresponding to carbon, 84-92 per cent. ; hydrogen, 

 10.69 per cent. 



C28H420 requires: carbon, 84*77 per cent.; hydrogen, 11-18 per cent. 



