lic ond pnaidene campholic acids ek were eta eel treatment with — 
oe oe gee, is a hee ostalliang pubstance, the alleged pas a 
position aed a small amount of an Pana whied accolding to ‘its properties could by 
ns be. identical with benzylidenecampholic_ acid. ~ Consequently, this latter 
ey Noes ee Bheey ae campholic ace with commercial ote oe 
ch: CH. Cole ‘ ee ane Oe 
ee Hh ! LO. = C H ic H CO.H 
: 8 He CO. nee oe ic 8 nc s “6 5 2 
ie eo; be Benzene cm acid. ; eae acid. “ Benzoie acid. 
acic results also from benzylidene camphor on prolonged standing with glacial acetic + 
A hydrobromic acids. According to Haller and Minguin, bromobenzyl camphor should be 
pen zylidene camphor in this manner. i | 
_ Reduction of d-benzylidene campholic acid with hydrogen in presence of nickel Olea 
idal pas aisles. ae sega agit m. p. Rec to 119. 3°. ! iy 
Thom and P. Runze®) aes on a noteworthy ‘Bcheelonr rat this acid. -When 5 a 
: mphoric acid are dissolved in 190, ccm. hot water and this solution gradually — 
ed with an aqueous solution of 3.58 g. (= 4/o mol. NaCO; +10H,0) sodium 
O ate, subsequent repeated shaking out with ether of the chilled solution yielded 
eee 4. Coy nearly one-half of the acid employed could be recovered, the’ other half 
ining dissolved in the aqueous solution as neutral sodium camphorate. Also 
working in the reverse order, i.e, on adding the. solution of camphoric acid to 
I sodium carbonate solution, or when working | in the cold by triturating the acid 
th "hg mol. ‘Na,CO; +10 H.O with cold water on a shaking-machine and extracting 
the — in all cases nearly one-half of the camphoric acid taken in reaction can 
en out with ether. ‘lt was an interesting point to ascertain how the acid esters 
f 4 
sie Berichte 51 198), 170. cog a A (1917), 1217. 
d had hitherto not been prepared and was unknown, but it was easily arrived at by - a 
aeccaie ede Wie a yeopieniide ‘obtained ae Gi couenaiensl ee alg ae 
yt btained thereby, but Rupe and Blechschmidt were unable to arrive at this body from ue 
