55 
Camphene and formaldehyde. 
A mixture of 30 gr. trioxymethylene, 130 gr. camphene and 136 
gr. glacial acetic acid is boiled for three days, the oil separated by 
means of water, is dried, whereupon it is converted into an acetate 
by boiling it with an equal weight of acetic anhydride, which is 
called homo-camphenol acetate owing to its being derived from a 
homo-camphene : 
Homo-camphenolacetate : 
Colourless oil, boiling-point 124°—128° pressure, 13 mm. 
De = 1,0013 N18" — 1,45209. 
Mol.refr. 59.23. Calc. for a substance C,,H,,O, with one C=C 
group: 59.02. 
Homo-pinenol. 
By boiling pinene with tryoxymethylene and acetic acid in the way 
as indicated for camphene, an oil is obtained containing much chemically 
bound acetic acid, yielding after saponification and fractionation : 
Colourless oil, boiling-point 113°—116° in vacuo, pressure 13 mm. 
Bee 0.9720. NES 1 48616. 
Mol.refi. 49,05. Cale. for C,,H,,O with one C = C group 49,66, for 
C,,H,,0 with two-C=C groups: 51,39. 
Mol. weight in benzene: found 188 and 190. Calc. 166. 
Homo-limonenol. 
Limonene is brought into reaction with formaldehyde in the manner 
as described for camphene, and the alcohol is separated as indicated 
for the pinene. 
~ Colourless liquid boiling-point 122°—126° in vacuo, pressure 
Pom. DS 0.9757, NY = 1.50261. 
Mol. refr. 50,26. Cale. for C,,H,,O with two C=C-groups 51, 39. 
Analysis. 
Houndec) Cris sand: Ai Cales for-€, HO 42/0795. 
oer 41. 67and 11,7. Cale: i eee ae 
These results agree with those of Krinwirz, l.c. 
Cedrene and formaldehyde. 
A mixture of cedrene with the equivalent quantity of formal- 
dehyde in a 15°/, solution of sulphuric acid in acetic acid, is stirred 
for three days. The reaction product is saponified and distilled in 
vacuum. 
Besides other products with a considerably higher boiling-point 
there is obtained: Homo-cedrenol. 
