Ryan—On the Preparation of Amidoketones. ; O27 
The platinum salt (C;HuNO),H,PtCl, crystallizes from hot 
water in long prisms melting at 206° C. 
C,,H.,.N.02PtCl, Cale RG 27°6 p.¢. 
Found Pt 27°8 p.e. 
The picrate (C,HiNO - C;H,N,0, is precipitated by means of a 
= normal sodium picrate solution, and crystallizes from alcohol in 
yellow needles melting at 176° C. 
0-1007 g. Sbst : 12°8 c.c. N (22°5° ©., 758 m.m.). 
C,;H.N.O:. Cale N 14'8 p.e. 
Found N 14:4 p.e. 
C. Reactions of amidoketones—By evaporating an aqueous 
solution of equimolecular quantities of the hydrochloride of 
amidoxylylacetone and potassium thiocyanate on the water-bath, 
xylylmethylimidazolyl mercaptan separates out. The solid was 
washed with water and recrystallized from 50 p.c. alcohol. It 
crystallizes in prisms soluble in chloroform, benzene, and alcohol, 
and scarcely soluble in water. It does not dissolve easily in dilute 
alkali or acid. M.-P. 267° C. 
0:1827 2. Sbst : 0°3222 g. CO,, 0-077 g. H.0. 
C,,HyN.S. Cale C 66:1, H 6:4 
Found C 66:2, H 6:4. 
The reaction had proceeded thus :— 
CH:CO co NH, HCl+ KCNO =KCl1+ H,0 + 0,,HiN.S 
O3H. 
Its formula may be :— 
C;H,C—N_ O;H, ° C—NH 
Zo JOSE ae S 7 SOSIEE 
CH,C—NH’ OH; ° C—N 
Similarly by evaporating equimolecular quantities of potassium 
cyanate and amidoxylyl acetone HCl xylylmethylimidazolone was 
obtained. 
KCNO + CH.;COCHNH.Cl = KCl ae H.O oF C,,H,,N,0. 
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OH. 
