| fe ‘HsC-< : : Sct < CH,- cH ua 
s a Methyl Frepropyl-teyeohexanone-s Pia ie ‘ Velen 
ait 4 x x N \ Hy . tr yaks eed Ba 
; : Panbinteg Fake. 
. os 1, 4Methyleylonexene propane. WS ie ean: Saturated extracyclic ketone Hone Yaga PhS 
. ay 8, ae 4, ee propane. 
Hc < G 
a © Dy 
: =. Boetker’) has published a Paper ‘on ‘menthophen Mehloromethane ‘on which We, 
roture, so ‘that. a great ae iieigs of stereoisomerides must be ‘expected to OXISH Ge 
heless, only the one form of the m.p. 140° is hitherto known. With the cyanogen Cake 
ative, matters are different. Boedtker*) prepared. the same by adding anaqueous, 
‘pine “of potassium cyanide to a boiling alcoholic solution of menthophenylchloro- ie 
| _ According to the length of boiling different products are formed, all being Maes i 
oisomeric modifications of the same menthophenylcyanomethane. - Boedtker suc- tS ‘ 
ed in. isolating from the mixture with indistinct melting point seven different _ oe 
isomeric forms which all differed from each other by their melting points. When ( eee 
ae lasts | only a short time a yellow labile body of m:p. 193° is obtained which Pi 
over, vit. several other labile forms, into the stable modification of m.p. 201°, ne 
Spe " es # 
» - 4 } t , eden sep 
idetcrnation of ition? into  egenone ree been described by Wallach, see Dp. 129 eae 
f this. Report. ‘ ae | i x z | at ‘s aN 
é ae Pee! A iy i Pike in ' Jha i ALE ; ' A (ae 
eA Pericyclocamphanone. — : On p. 08 of our Report April 1915 we s discussed: a paltry 
yn munication of W. Holz*) on cyclocamphanone and on Angeli’ cS camphenone. J. Bredt — 
nC Ww. Holz’) : now report on preparation, properties, and derivatives of cyclocamphanone — 
tic! they term “2-pericyclocamphanone” (I). They: ‘have adopted the term “pericyclo” 
ne trimethylene ring because the ‘ ‘corner’ carbon atoms B-8', , whose linking closes oe 
yclic ring, are in the same proportion to each other as are. the ““neri” carbon 
oa in the ar oat lens nucleus. ih a ne 
: ip , 
' ri a DS Jar, : eal o 
<1 2 
*) Comp. A. Kotz ‘and ) Fre beset Liebig’s Annalen 342 (1905), 2 306; Report April. 1906, 126. — 7%) Bull. 
oy oe Yi (1915), 374, — 3) Thidem IV. 23 (1918), 64. ai Ay Zeitschr. of angew. Chem, 27 (1914), | 
4 Journ f- prakt. Chem. IL. 9% (1917), 133. WP BEN, ewe 
i Le i a 4. | ; ec | ; Roe F Or 
wl 
y : 
