— 25 — 



Attempts to produce from the sesquiterpene the above alcohol, 

 a dihydrochloride, nitrite, or nitrosate, had only negative results. 

 We were, however, successful in obtaining a nitrosochloride, but this 

 crystallised with exceptional difficulty owing to resinous impurities. 

 Only once we obtained a few crystals by diluting the crude product 

 with a trace of alcohol, and then cooling it very strongly. All further 

 attempts remained unsuccessful. The hard crystals referred to melted 

 indistinctly at ioo° to 102 . 



In connection with these results, we were desirous of deciding 

 whether the cedar camphor or cedrol present in cedar oil is 

 actually, as has hitherto been assumed 1 ), the optically active modi- 

 fication of the inactive cypress camphor, or whether it represents 

 another sesquiterpene alcohol. For this reason we determined its 

 physical constants, which, apart from the optical activity, entirely 

 corresponded with those of cypress camphor. Its analysis, deter- 

 mination of molecular weight, and also its behaviour towards formic 

 acid, also led to exactly the same results as in cypress camphor. The 

 analytical data follow here: 



melting point 86° to 87 ; boiling point 291 to 294 ; [ a JD + 9°3i / 

 (determined in 11,2 percent, chloroform solution). 

 0,1593 gm. of the substance: 0,4735 g m - C0 2 , 0,1685 gm. H 2 0. 

 Found Calculated for C 15 H 26 



C 81,06% 81,08% 



H n,75% n,7i%. 



Molecular weight (according to Beckmann's boiling method) 

 Found Calculated 



249 222 



Hydrocarbon : 

 boiling point 263,5° to 26 4°; ^15° 0,9366; « D — 85° 32'; 

 n D20° i,49 8l 7- 

 0,1359 g m - °f tne substance: 0,4393 gm. C0 2 , 0,1466 gm. H 2 0. 

 Found Calculated for C 15 H 24 



C 88,16 % 88,23 o/ Q 



H ii,99% 1176%. 



In this case also, all attempts to produce a crystalline derivative 

 of the hydrocarbon were unsuccessful. In the nitrosochloride test, 

 however, the course of a reaction could here also be observed. The 

 difference between the two bodies therefore only consists of this, that 

 cedar camphor is dextrorotatory, and cypress camphor inactive, and 

 that the former under the action of strong formic acid is converted 



*) Gildemeister and Hoffmann, "The Volatile Oils", loc. cit. 



