- 8 9 - 



The examination of the santalenes C 15 H 24 , also carried out by 

 Semmler 1 ), showed a very close relationship of the two sesquiter- 

 penes a- and /9-santalene to the two santalols C 15 H 24 0, as the former 

 yielded the same derivatives by degradation as the latter. The two 

 santalenes were separated by fractional distillation. 



a-Santalene, C 15 H 24 (b. p. 1 1 8 to 1 20 at 9 mm. pressure; d2o° 0,8984; 

 «d — 1 5 ; n D 1,491; molecular refraction found 65,8, calculated for 

 C 15 H 24 /T66,i5; calculated for C 15 H 24 / — 64,45) yielded, on treatment 

 with ozone in benzene solution in the presence of water, tricyclo 

 ecsantalal C u H 16 (see page 85), which shows that it is a tricyclic, 

 singly unsaturated hydrocarbon. 



/?-Santalene, C 15 H 24 (b. p. 125 to 127 at 9 mm. pressure; d2o° 0,892 ; 

 «r> — 35 ; "p 1,4932; molecular refraction found 66,55, calculated 

 for C 15 H 24 /T 66,15), when treated in the same manner as a-santalene, 

 yielded an aldehyde which could not yet be obtained pure of ses- 

 quiterpene, but which could be converted over the oxime and nitrile 

 into bicyclo ecsantalic acid (m. p. 62 to 64 ). Semmler draws from 

 this the conclusion of a bicyclic, doubly unsaturated molecule of 

 /?-santalene. 



Sassafras Oil. Stimulated by the high prices of safrol, the 

 trade in this article was brisk, with prices unchanged but firm. 



Savin Oil. We recently succeeded in detecting citronellol in 

 a fraction of oil of savin boiling higher than sabinol. We employed 

 for this purpose a fraction boiling at 78 to 94 (4 mm. pressure), 

 which at ordinary pressure boiled between 220 and 23 7 . The oil 

 was heated on a water -bath with phthalic anhydride for 2 hours, 

 and from the resulting acid phthalic ester the alcohol was liberated 

 in the usual manner. The quantity of the alcohol purified by 

 distillation with steam, which had a citronellol -like odour, was 

 about 5 g. B. p. 95 to 96,5° at 6 mm. pressure, 224 to 227 at 

 atmospheric pressure, di 5 o 0,8715. The silver salt of the citronellol 

 phthalic ester acid formed from it melted after recrystallisation from 

 benzene and methyl alcohol at 126 to 127 . Terpineol could not 

 be detected in a fraction boiling slightly lower. 



In the further course of his studies of the oil of Juniperus phcenicea L., 

 which, as is well known, is frequently mistaken for oil of savin, J. Rodie 2 ) 

 arrived at the following results, which we communicate here as a 

 continuation of our previous information 3 ). Whilst the particulars 

 hitherto given by Rodie dealt chiefly with the composition of the 



*) Berl. Berichte 40 (1907), 3321. 



2 ) Bull. Soc. Chim. IV. 1 (1907), 493. 



3 ) Ibidem III. 35 (1906), 922; Report April 1907, 93. 



