566 
EESEARCHES OF DE. HOFMAXN AXD M. CAHOUES 
0-500 grm. of substance gave 1-029 grm. of carbonic acid and 0-117 grm. of water. 
The formula 
C., H,, N, 0,=C, Ce C, H, X, 
requires — 
12 equivs. of Carbon . . . 
12 equivs. of Hydrogen . 
2 equivs. of Nitrogen . 
2 equivs. of Oxygen . 
1 equiv. of Ethyl-allyl-urea . 
Theory. 
Esperiment. 
'^72 
56-25 
56-12 
12 
9-37 
9-25 
28 
21-95 
16 
12-43 
— 
128 
100-00 
The action of methylamine, of amylamine, and of aniline upon cyanate of allyl. has 
given us analogous results. We have not submitted these products to analysis; but 
their resemblance to the preceding compounds, and especially their mode of foi-mation. 
leave no doubt respecting their composition. These products, as is obiious, belong to 
that numerous class of compound ureas which have been studied uith such remarkable 
results by M. Wurtz. 
Diallyl-urea (Sinapoline). 
When cyanate of allyl is heated with water, it assumes a buttei-}" consistence and ulti- 
mately solidifies entirely. The product obtained under these cii’cumstances possesses all 
the properties of sinapoline, which, as is known, is formed by the action of hydrated 
protoxide of lead upon mustard oil, and is in fact diallyl-urea. The properties of tliis 
substance presenting complete identity with those of sinapoline, and its mode of for- 
mation being perfectly similar to that of dimethyl- and diethyl-m-ea, we have not 
thought it necessary to submit it to analysis. This body is likeufise formed when 
cyanate of allyl is boiled with an aqueous solution of potassa, with the Hew of trans- 
forming it, after the manner of ordinary cyanic ether, into an alkaline carbonate and an 
ammonia-base. In this case it is necessary to arrest the action at a certain pomt. for 
if the ebullition be continued, the sinapoline is destroyed in its turn, producing car- 
bonate of potassium and ammonia-bases. 
The formation of sinapoline, by the reciprocal action of cyanate of allyl and water, is 
represented by the following equation: — 
2^H, N0,)4-2H0=2CC\+C, H., N, O, 
Cyanate of Sinapoline or 
allyl. diallyl-iu-ea. 
Allyl-ammonias. 
When cyanate of allyl is boiled with a concentrated solution of caustic potassa until 
the oily layer entirely disappears, a complete decomposition ensues, and the residue con- 
tains only a mixture of carbonate of potassium tvith an excess of the alkaline hydrate ; 
the volatile products condensed in hydrochloric acid furnish a saline mass tvhich may be 
