, Powe: to anes for the major part, ae ee a chingivaee 
ey shaken out with _benzine, the acid thrown down: 
\ 
soda solution, but leaving ne AG ai the acid present in the: fess state, oe 
means, the author expected to obtain Erlenmeyer’s heterocinnamic acid, whi ie ni 
. 
was not the case. The _ crystals, it is true, differed somewhat from the one al cryst 
acid, bit divealed not the properties claimed by Eeleniae et for. orareay cinnam C 
acid. Neither did the “caustic soda test’ lead to heterocinnamic acid. yy | | 
| By further purifying the ester by means of recrystallising under special precautions, 
the m.p. was finally raised to 34.8 to 34.9°. From this ester, 16.5 synthetic cinnamic 
bs Be beg 
mink BS 
i were Byspared according to Erlenmeyer’s directions; the first fraction (about 1 g) viele 
‘hs in the “ether test”, Erlenmeyer’s so-called synthetic cinnamic acid. : hy ae 
‘ It was not possible to obtain Erlenmeyer’s synthetic — acid by reerystallising the 
4 -_ cinnamic acid (from alpinia oil) purified by water. ; ‘ iat 
3 --—- From 860 g. cinnamic acid, the author obtained, on puntata by id of ‘alcabols 
--—-—s- 13.5 g. of a synthetic acid, of which the first fraction (about 1 g.) coo i 
3 - meyer’s synthetic acid. 
oe de Jong concludes from the results of his investigations that Erleheneverts 
i cinnamic acid is not formed from pure cinnamic acid i in. the n manner fg e 
: used by that author. The heterocinnamic neid of Erlenmeyer, therefore, are no 
se chemical products. es 
a, fae hicen oublighéd on that subject, 
Ta now become generally known. 
is ie camphenilonone (Il) into hidboxyoan pHedhase Bid: (I) by hagas itt 
soda on a water-bath, by which reaction the formula for carbo 
verified. According to Aschan°), camphenic a on distillation 
See oe 
F Rh _ 1) Berl. Berichte 47 (1914), 512; Phi April 1914, 145, ‘Ann, Acad. Scient Fenn. 
 ———s« Report April 1915, 107. — *) Berl. Berichte 47 (1914), 871; Report April 1915, 105. 
——_, (1914), 1550; Report April 1915, 106. — *) Ann. Acad. Scient. Fenn., A. 6 1944), Ne. 
1. 839. — 5) Liehig’s Annalen 888 (1911), 58. - Bete 
