— 187 — 



/NO 

 C 15 H.2 4 N0C1 + HOC 2 H 5 = C 15 H 24 < + HC1. 



X OC 2 H 5 



The resulting compound C17H29NO2 would then be an ethoxy nitroso- 

 caryophyllene. 



For J 3 ' 8(9) -p-menthadiene, see p. 191. 



Styrene. The so-called "solid distyrene" which Stobbe and Posnjak ') 

 have been investigating some time ago, is in reality, as was recently stated 

 by Erlenmeyer* 2 ), stilbene; while "diphenylbutane", which Stobbe and 

 Posnjak had prepared from the dibromide of the solid distyrene, is dibenzyl. 

 Stobbe 3 ), who was afforded an opportunity of reading Erlenmeyer's MS. 

 before it was printed, agrees with the latter's conclusions, so that "solid 

 distyrene" may now be deleted from chemical literature. 



Alcohols. 



On alcohols homologous to citronellol and geraniol, see under General, 

 page 156. 



On the occurrence of nerol in cananga oil, see p. 30. 

 Cfydogeraniol, see under Acids, p. 202. 



Linalool. Enklaar 4 ) has recently observed that when linalool is passed 

 over active copper at a temperature of 135°, a hydrocarbon Ci Hi 6 , with a 

 limonene-like odour is formed. This hydrocarbon, to which one of the 

 subjoined two formulas is attributed, possesses the following properties: 

 b.p. 68 to 69° (12 mm.), d 15 o 0,834, « D + 8° 8', n mio 1,48, mol. dispersion 1,84. 

 In carbon tetrachloride solution this hydrocarbon absorbs 2 atoms bromine; 

 at room temperature it is not attacked by permanganate of potassium. 

 When passed over active nickel in an atmosphere of hydrogen (at 180°), 

 2 atoms of hydrogen are absorbed, and a hydrocarbon C10H18 (b.p. 164 

 to 165°; diso 0,787) is formed. 



L (CH 3 ) 2 CH.CHCHCH 2 



CH:CHCCH 3 

 II. (CH 3 ) 2 C:C — CH — CH 2 



CH 2 • CH 2 • C • CH 3 



x ) Liebigs Annalen 371 (1910), 259; Report April 1910, 170. 

 2 ) Liebigs Annalen 372 (1910), 247. 

 -) Ibidem 249. 



4 ) Koninklijke Akademie van Wetenschappen te Amsterdam, Afd. 18 (1910), 23; quoted 

 from Chem. Zentralbl. 1910, I. 1252. 



