IIyan and 1)unlea — On Unsaturated 0- Dike-tones. — I. 5 



in sufficient quantity to form a layer over the water which was then added in 

 order to dissolve the sodium salt of the diketone. By this means any sodium 

 remaining unacted upon was prevented from reacting too vigorously with the 

 water. When the sodium salt had fully dissolved, the aqueous solution was 

 separated, washed a few times with ether, and a current of air was passed 

 through it to remove the last traces of the ether. It was then cooled in ice 

 and treated with carbon dioxide till complete precipitation of the diketone in 

 the crystalline condition was effected. 



The latter was filtered off and recrystallized from dilute alcohol or 

 from petroleum ether. The yield of pure substance was about 6 grms. 

 M.P. 83-84° C. 



0-2327 substance gave 0-6516 C0 2 and 0-1335 H 2 0, 

 corresponding to C 76-4 H 6 - 4. 



C 12 H 12 2 requires C 76'6 H 64. 



Cinnamyl-acetyl-methane crystallizes in elongated needles of a faint 

 yellow colour. It is readily soluble in alcohol, acetone, ether, or chloroform, 

 less so in petroleum ether. It is insoluble in water, but soluble in aqueous 

 potash, from which it is reprecipitated on acidification. Its alcoholic solution 

 is coloured red by ferric chloride. In concentrated sulphuric acid the crystals 

 dissolve to a yellow solution. It dyes wool mordanted with iron a bright red, 

 with chromium a dark yellow, and with aluminium a light yellow colour. 



Cinnamenyl-methyl-isoxazol C 6 H 5 CH : CH . C — CH 



II II 



N C— CH 3 

 \/ 

 



A solution of 2 grms. of cinnamyl-acetyl-methane and 2 grms. of 

 hydroxylamine hydrochloride in absolute alcohol was heated for several 

 hours under a reflux condenser. The alcohol was then distilled off ; the residue 

 was mixed with water and extracted with ether. The ethereal solution 

 was washed with dilute potash till the latter was colourless, then evaporated, 

 and the isoxazol re- crystallized from dilute alcohol or from petroleum ether. 

 The yield of pure substance was about 1 grm. M.P. 88° C. 



0-1873 substance gave 0-5352 C0 2 , and 0-1046 H 2 ; 0-1639 gr. substance 

 gave 10-6 c.c. of nitrogen at 14° C. and 767 c mm.p., 



corresponding to C 77"8, 



CuHnNO (isoxazol) requires C 77'8, 



C 12 H ia N0 2 (monoxime) requires G 70 - 9, 



12 H u N 2 O 2 (dioxime) requires C 66'0, 



H 6-2, 



N7-6. 



H 5-9, 



N7-6. 



H6-4, 



N6-8. 



H 6-4, 



N 12-8. 



