ee Dip. 195° at ‘14 mm.; ie 4 54093" (1 5565 . in 30: cc. aleohol); d 
a nitrile, [@]pno + 44° 24" (1.5388 g. in 10cc. alcohol). Both n 
benzyl-8-campholenic amide, b. p. 197° at 12 mm. ne ie ~camphol 
b. p. 204° (12 mii)... rt : eget oe 
irone, L. Busia: concludes that a- and one are” ot eke 
‘with irone, but also stereoisomeric, 7. ¢., in addition toa different 
double <a cis-trans-isomerism also comes into consideration. lt 
cH, CH; 
OMe 
C 
Hc’ \ 
H.C Re CH " CHs 
5 ee 
‘1! Tetrahydroirone. 
v From these different Giga properties, Ruzicka infers 
isomerism between the ionones and irone. be hati. baal Saag oO ee at 
down to lower ‘ “Abbau” 
In both dasee no characteristic cleavage products were Seamed beeiaee 
Contrary to Skita’s observations, only the tetrahydro” compound was: 
reducing the ionones with colloidal palladium, but when working with lat 
according to Willstatter, hexahydroionone was formed additionally, for 
as the term Bey cee With Kelber's nickel ae 
: te 21) Helw. ham: acta 2 (1919), 352. 
Berichte 49 (1916), 55, 168. 
