14 ART. 4. — Y. SlIIBATA : THE ACTION OF 



mixture of chloroform and alcohol. Brilliant minute crystals 

 of meltino- point 150.5° were thus obtained. A determination of 

 carbon and hydrogen gave the following results : 



1) 0.1957 g. of the substance gave 0.6412 g. of COo and 

 0.1071 g. of HoO. 



2) 0.1559 g. of the substance gave 0.5095 g. of CO2 and 

 0.0881 g. of HoO. 



1 2 



Carbon 89.36 89.13 



Hydrogen 6.12 6.32. 



^0(07X17)2 V 



l:l-Dibenzyl-3-benzal-phthalane, CgH/ )>0, re- 



^ClrCH-CeHy 

 quires 



C=89.64 H = 6.23. 



The substance is very easily soluble in chloroform, moder- 

 ately so in benzene and ether, and almost insoluble in alcohol and 

 petroleum ether. 



When oxidised with potassium permanganate, l:l-dibenzyl- 

 3-benzal-phthalane is readily converted into dibenzyl-phthalide. 



The action of bromine upon l:l-dibenzyl-o-benzal-phthalane 

 in chloroform or carbon bisulphide solution is exactly the same 

 as that upon l:l-dimethyl-3-methylene-phthalane and takes place 

 very easily at ordinary temperatures. 



Potash fusion gave benzoic acid together with a brownish 

 oily matter, which has not yet been further examined. 



IV. The action of ethyl magnesium halide on o-phthallc 

 esters. 



The action of ethyl magnesium bromide and of ethyl magne- 

 sium iodide upon o-phthalic acid diethyl ester and also the action 

 of ethyl magnesium iodide upon o-phthalic acid dimethyl ester 



