( 686: ) 
| | Decomposition 
, with NaOC,H, 
Eep b. p. | Ee to hexachloro- 
propylene 
| had 
| 
| C—12.95and 15,03 LEN, 
| 132° at 30 mm | Calcit- | xn odour of fruits, 
ld == 0:52: 5, (Ofer lated {which possessed all 
| Pei AE ‘the properties of the 
C1=86.60 ,, 86.56{ C = 12.61 Faire Bp, 209°, 
Product from 
CHCI,COCI 
and AICI, 
(B. and Pr.) | 
| | 
H = 0.33, With 1 mol. was 
C 70 formed an ol Navies 
| 1—87.06 the odour of rasp- 
CHCILCCI CCI, 30) : 150- 151 > at Cl — 86 8 } berr es ClgClg, B.p. 
50 mm = re 209:2.0 , wh.ch w th 
3 three more meals. 
W s converted into 
the o:tho ester «f 
trichlor. acrylic acid. 
95° 
32° Solidifying 
point 29 
(FRITSCH) 
chloride. A little of the catalyst dissolves in C,Cl,, cut an additive 
product cannot be isolated. {Aluminium chloride may be readily 
recrystallised from C,Cl, by heating it with the solvent to 130 — 
140° in a sealed tube. On cooling it is obtained in large six-sided 
crystal plates which after having been washed with carbon tetra- 
chloride and dried by suction, do not contain any carbon. 
This simple synthesis not only elucidates the progressive change 
of the reaction of FriepEL and Crarts, but it throws an important 
light on the catalytic action of aluminium chloride, as it gives an 
additional proof that the theory of the intermediate products for the 
“explanation” of this action must be abandoned, which one of us 
has already argued many a time. As regards the first point, I refer 
to the researches of Krapiwin (Centr. Blatt L. p. 1835) and of Darzens 
(Compt. Rend. 150 p. 707). The first has built up unsaturated ketones 
from acid-chlorides and from unsaturated aliphathic hydrocarbons 
by means of aluminium chloride. The latter has prepared, in the 
same manner, acetyltetrahydrobenzene from tetrahydrobenzene and 
demonstrated also that in this reaction a hydrochloride is formed as 
an intermediate product, of which it is assumed without further 
CH; 
HC Nena 
HCN fe HCOCH, 
CH, 
proof that it should have the composition 
From these observations it appears that, in the condensation, there 
must be present an unsaturated compound and another substance 
