ae ery ae phenvicamphone acid is fotnted by the fol lo ing 
Sodio-potassium amide and amyl nitrite transforms phenylcamphor in o the is 
compound, m. p. 89°, from which, by treatment with sodium > hydrogen 
Or quinone, rh. p. 145°, is. obtained. Poloces Mis 
eidlusively open-chain unsaturated sven Prins?) has now “iubtisned 4 new. | 
~ the same subject, entitled, Mutual condensation of unsaturated 1 compo in 
to Bn aaa resins, and eso er. 
C=C; 2. all the bodies cain uniting | wtith the grouping és C, ndenendenel 
stability of the compound formed, supposed that the experimental conditions are 
chosen that the velocity of the reaction between the catalyst and the grouping. ue 
small compared with the velocity of the mutual reaction of both the activated gro 
C=C. This depends of the nature of the substances and other conditions and ° 
naturally be realised best if the interacting C=C groups are situated within the sat 
molecule and if their mutual distance in the molecule is favourable for reaction. : 
“i great number a coaiponnds, and elements belong to these two snoune of cat 
or of active metallic Wnetnies, pally the, metals themselves owing: to thelr 
to form carbides. ; iad ; 
resin, the Heine Ghat of isoprene and of p-myreene 2 and with the : 
caoutchouc. For eae we refer to the es payer: 
review of the terpene chemistry. in concise form. 
1) Chem. Weekblad 14 1917, 923; Chem. Fentralbl. 1918, i 168. Pay ther ; 
9 Buneken Pg ase hcg hahaa oe Jubilee Numbers 1918; Chem. Zentralil. 1919, yl ‘ 
