— 170 — 



as a catalysing agent. In each experiment they obtained the same hydro- 

 carbon CioHis, to which they give the name of thujane. Thujane is 

 powerfully attacked by alkaline permanganate solution and gives no 

 reaction with a nitrating mixture. When obtained from the various raw 

 materials thujane gave the following constants 



Thujane 

 from 



B. P. 



[ah 



no2oo 



Mol. refr. 

 found calc. 



1-a-Thujene 

 d-a- „ 

 Sabinene 



157o (758 mm.) 



157o (759 mm.) 



157 to 158 o 

 (760 mm.) 



0,8161 

 0,8191 



0,8139 



40 



+ 62,63 o 

 -f 34,72 

 + 18,56 



1,43759 



1,44102 



l,44393(17o) 



44,49 

 44,54 

 44,80 



43,92 

 43,92 

 43,92 



Thujane is a mobile liquid with a rather pleasant odour. 



a-Pinene. In our last Report we discussed a paper by Buschujeff 1 ) 

 on the formation of nitrosopinene in addition to pinene nitrolpiperidine in the 

 course of the reaction of pinene nitrosochloride with piperidine. We then 

 pointed out that this reaction had already been noticed many years ago by 

 Wallach. Buschujeff denies this 2 ), stating that although Wallach obtained from 

 his reaction d-pinene nitrolpiperidine, he did not obtain nitrosopinene. Buschu- 

 jeff is quite correct in stating that the paper by Wallach in question only 

 refers to the formation of d-pinene nitrolpiperidine, but all chemists who 

 have occupied themselves with terpene-research have long been aware 

 that nitrosopinene is formed in the circumstances, especially when the 

 nitrosochloride is heated too rapidly with the bases. 



In our last Report we commented upon a paper by Cusmano 3 ) on 

 the isonitramine oxime of «-pinene which is yielded by the hydroxylamine 

 oxime of «-pinene and on the decomposition-products of the first-named 

 body. A subsequent paper by Cusmano 4 ) contains a graphic represen- 

 tation showing at a glance the conversions of the pinene hydroxylamine 

 oxime and of its corresponding isonitramine oxime. We have no space 

 to reproduce the equations here and must therefore content ourselves 

 with referring to the original paper or to the abstract cited below. 



On the reduction of pinene, see p. 166. 

 On the reduction of sabinene, see p. 166. 



*) Journ. russ. phys. chem. Ges. 41 (1910) 1481; Report October 1910, 179. 



2 ) Journ. russ. phys. chem. Ges. 42 (1910), 1447; Quoted from Journ. Soc. chem. In- 

 dustry 30 (1911), 108. 



3) Report October 1910, 178. 



*) Atti R. Accad. dei Lincei, Roma V. 19 (1910), II. 63. Quoted from Chem. Zentralbl. 

 1910, II. 883. 



