d le ee line senentine oil was Poamiied: at the Imperial Institute in London; 
as found to have the following constants: diso 0.8446, a) + 31°24’, ester v. 2.6, 
est © v. after acet. 36.4. 89 per cent. of the oil boiled from 153 to 160° and 11 per cent. | 
eat from 160 to 180°; it possesses satisfactory siccative properties and will, presumably, © 
_ be e found useful for ES purposes. 
Ss 
at the oil of this umbellifera, whose content of -phellandrene had been recognized 
by them at an earlier date*), shows in its various fractions a yield of nitrosochloride 
of almost constant optical rotation, which yield is the greater, the lower the optical 
< 
- same conditions as $-phellandrene, yields no nitrosochloride. From this it might bea 
concluded that the active #-phellandrene possesses a specific rotation _approximately Ee 
= _ corresponding with the indications of Pesci, Wallach, and Schimmel & Co. (viz., between 
+ 14.45 and 18.54°) and that in the fractions “possessing a higher optical rotation (up 
7 to +1 65. 02°), another isomeride, probably the «-isomeride, is present in corresponding — os 
E “quantities. The fact, however, that not only the yield of nitrosite but also its optical 
- rotation is constant in the various fractions of the oil, leads to the supposition that 
z Oil of Bupleurum Sruticosdin. L. Francesconi and E. Sernagiotto*) have observed 
rotation of the respective fraction, and moreover, that the «-phellandrene, under the — = 
~ #-phellandrene possesses a specific rotation of + 65.2° and that the fractions exhibiting 
lower activity are mixtures of the two optical antipodes with the dextrorotatory form — fe 
ee ee preponderating. The result of the oxidation with permanganate of potash iss : 
in agreement with this, tetrahydrocuminaldehyde being obtained, but no «-hydroxy-@-iso- 
a = _ propylglutaric acid, the oxidation product of a-phellandrene. This is also in agreement 
- with the behaviour in the formation of the nitrosochloride, as an analogous case 2 
4 occurs with a-pinene whose yield of nitrosochloride is the greater, the lower the optical — ee 
3 rotation of pinene. 
- Phellandrium aquaticum. In alcoholic solution and in the presence of alcoholic hydro- 
; _chloric, acid (but not in glacial acetic acid) it produces a nitrosochloride the yield of 
x which is the greater, the lower the optical rotation of phellandrene. a) average -—— 206°. 
E By crystallization it may be split up in two isomerides, «-nitrosochloride, (% — 175°; 
z m, p. 101 to 102°) and ?-nitrosochloride (4p — 285°; m. p. 100°). On decomposition sate 
a E Blacial acetic acid the nitrosochloride yields 4®°-dihydrocuminaldehyde and carvacrol, 
8-Phellandrene of the oil from Bupleurum fruticosum is identical with the one from 
as well as cuminaldehyde by secondary oxidation effect of the hydroxylamine. It. = 
- follows that the crystallized nitrosochloride _of #-phellandrene is a mixture of two 
structural isomerides. The nitrosobromide of S-phellandrene is a white crystalline 
unstable body. The nitrosite of @-phellandrene melts at 97 to 98°; [«]p 159.19° (in eo. 
q chloroform); «-phellandrene yields no crystalline nitrosochloride. 
__pogon mollis, Kth., N.O. EE: yields 0.4 per cent. of essential oil; it is a limpid 
2 Die ctherischen Ole, 2"4- ed., vol. Ill, p. 333. — *) Bol. Acad. Nac. Ciencias, Cordoba 19 (1913), 379; Journ. Chem. 
¢ Soe. 106 oe 1172. 3 . 
Oil of Bystropogon mollis. According to A. Deering’) Argentine mint (Bystro- : 
4) Gazz. “chim. tal. 46 (1916), 1. 119; Chem. Zentralbl. 1916, 1. 973.. — %) Gildemeister und Hoffmann, — 
