lOI 
In the course of the examination of compounds with the radical 
C3H5, it has now been found that the chain C3H5, if it represents a 
propenyl-group • CH : CH • CH3, yields oxidation-products with mercuric 
acetate ; but if it is an allyl-group • C Hg • C H : C Hg , yields mercuric 
addition-products. In perfect agreement with this are the products ob- 
tained from pinene and camphene, and in the following formulae for 
the two terpenes the above-mentioned groups are clearly shown. 
CH 
CH„ 
\ CH„ 
Camphene 
CH, 
CH3 .( 
-A 
! ( 
i c i 
! II ^ 
CH 
Compounds with an allyl-group, such as methyl chavicol, methyl 
eugenol, safrol, etc. therefore give addition - products which are com- 
posed according to the general formula 
/HgC,H3 0, 
R 
OH 
and consist of two isomers each. On the other hand, substances with 
a propenyl-group, such as anethol, methyl isoeugenol, and isosafrol, form 
oxidation-products in the form of glycols of the composition 
/OH 
OH 
with separation of the characteristic leaflets of mercurous acetate. All 
addition-products yield again the original compound on reduction with 
zinc and soda , liquor. An exception hereto is apiol, whose mercuric 
addition-product is reduced to the body 
xH 
CH^O^^ 
^CgH . C3H5< 
OH 
(CHgO)^ 
with a 
slight apiol odour. The oxidation-product of isoapiol corresponds to 
the glycols obtained from isosafrol and methyl isoeugenol. 
a crystalline compound of the melting point 29,5° to 30,5° 
