~ cyclopentane-2-ca mn 
Dip diecanphorphoiose “The parosiae of lead ad 
appropriate for its oxidation into the ketone C,H. 0, as the” 
soluble in water. The best method is to bind the acid to alkali, rr 
“solution of the salt with Boe at solution in eXCess, acidulate 
of much foam. B. p. 184 to’ 1850; dg. O.800r na 14440, We shave hele ee eae 
“ dihydrocamphorphorone (diydropulegenone); scr se m. p. eo to 199° 
bromine, a dibromide, CioHieBr2O, is obtained which differs altogether from 
isomerides arrived at on brominating dihydrocarvone direct, or dissolved in 
acetic and hydrobromic acids. According to the active or inactive ketone used, 
or inactive preparations are obtained. The new active dibromide from tetra 3 
carvone melts between ‘80 and ae the inactive vary between 66 and er 
identical transposition products as dbramomenttione 
ye” Through bromination of methyl-1-csopropyl-3-cyclohexanone-5 (d-inenthone) a mi x 
‘was obtained, composed of an «-dibromide, m. p. 133 to 134°, and a 6-dibromide, w 
» has not been isolated as yet in a pure state. When the crude dibromide was | 
with potash lye, part of it dissolved, but a considerable part remained, mainly 
sisting of «-dibromide. Distillation of the filtered and acidulated liquid wit 
led to a body CioHis Oo, m. p. 47 to 48°, which showed the characteristic co’ 
_ with ferric chloride. On extracting the acid liquid with ether, after the comp 
CioHigO2 has been removed, an acid of the formula Ci HisO. is obtained, m. p. 1 
ms to 149°. It is presumably a dihydroxy acid. Quite another acid, CioHisOs, forms ° 
CioHigO2 is heated with potash solution. On heating a solution of the resulting 
( with peroxide of lead and sulphuric acid, it passes into methylisopropylcycloper t 
b. p. 191 to 192°; digo 0.8881; np 1.4430. The semicarbazone melts between ee a 
the oxime at 91 to 92°. 
Phenols and phenol ethers. 
‘ ° Oxidation of phenols with unsaturated side chains by means ie ozone. Rhee 
: the methylhomovanillin, prepared some time ago by C. Harries and R. Haarm: 
§ through reducing methyleugenol ozonide, Harries and C. Adam*) now publish 
S details. It is a pale yellow, fairly thick liquid of a feeble, but agreeable, vanilla-li 
Be - odour. B.p. 121° (0,35 mm.); npx»0 1.54257. The semicarbazone melts at 163°, ot oy 
ae 181°, as was formerly indicated. M. p. of the p-nitrophenylhydrazone, 159° (pre Ss 
Mg _ indication, 157°). The bisulphite compound of the me is Spas gly 
if 
ozone in benzene solution. The teen ediatiliatied by Harries Git a Ade 
~ way with Semmler’s. Refractive index (np 1 ST117 according to Semmle 
1) Berl. Berichte 48 (1915), 32; Report April 1916, ne i 2) Berl. Berichie 
Berichte 41 (1908), 2751; Report April 1909, 130. ~ Mae 
