i ‘The fenchane prepared Accord to Kishner yielded ‘on riniteanion a 0} 
compound and a ketone; no tertiary nitro-compound could be obtained. — ‘ 
by es °») is of quite different structure. It yields on aineeon a tettiany: nitro- & 
compound and apocamphoric acid, for which reason the author takes it to be a hydro- se 
carbon of the formula II and calls it isobornylane. It boils between 163.5 and 164. 5° 5 
(753 mm.); > 0.8579. There is no reaction with permanganate and dilute nitric acid, 
but it is pGagked by fuming nitric acid. , oa ae 
CH pe CH. = a 
Hac | C (CH) HeC;— | CHa Bree 
CHe ; C(CHs)2 x 
sHenintel bebe ch Hick |. SAGE 
C-CHs CH tee 
(1) Fenchane. (Il) Zsobornylane. - 
Pinene. In two articles on the chemistry and the therapeutical use of pinene — 
ozonides, J. E. Blomén*) gives a short review of all the publications on pinene ozonide 
and allied bodies, without adding anything new, so that we need not enter into detail. k 
Limonene. Some years ago, H. Neresheimer’) described limonene diozonide and 
showed that, on oxidation with chromic acid and glacial acetic acid, it passes into an 
acid, which he considered to be diacetylvaleric acid. That this is correct, is evidenced 
by a publication of C. Harries and H. Adam’). They treated limonene in glacial acetic 7 
acid with concentrated ozone up to saturation and kept the solution for two days, ta 
gradually adding chromic acid in glacial acetic acid. After the glacial acetic acid had 
been evaporated in vacuo as far as possible, the syrupy residue was extracted with 
ether and the ether then removed. A perfectly clear, thick syrup remained, from which, 
on esterification with methyl alcoholic hydrogen chloride, a product was dbtaurene 
composed most likely of a mixture of methyl diacetylvalerate and its dehydration 
product. As a diketo acid with the ketone carbonyles in 2.6 position, the acid ought 
to be susceptible of splitting off water and consequent ring formation. On being hea 
with alkali, it likewise splits off water, but it has been impossible so far to ye 
in what way; theoretically, there are two possibilities. hae 
if Zentralbl. 1916, a. 253. — 2) See Pete April 1912, 195, = 4) Liebigs dies ou (1912), 86; 2 
1918, 139. — +4) See Report April 1900, 55. — 5) Journ. russ. phys. chem. Ges. 86 (1904), 770. 
i + Americ. chem. Soc. 87 (1915), 199, 398. See Report October 1915, 71. — 7) Inaugural dissertati 
“ he — C. Harries, Untersuchungen aber das Ozon und seine Einwirkung auf organische Verbindungen; 
pp. 443. — 8) Berl. Berichte 49 (1916), 1034. 
