Semi-annual report of Schimmel & Co(Fritzsche Brothers) . t 90°/o). The authors converted this menthol fraction into its acid phthalate,which gave m. p. 140 to 143°, [a]D + 4,58°. The ester was recrystallised28 times from 95°/o acetic acid, after which it melted between 141 and 144°,the specific rotation being +57,16° (in chloroform). Mixed with d-neo-menthyl phthalic ester, the ester melted between 142 and 144°. The alcoholwhich was regenerated from the ester, when oxidised with Beckmannschromic acid mixture, yielded Z-menthone ([«]D— 28,33°). The odour of d- and Z-neomenthol differs altogeth
Semi-annual report of Schimmel & Co(Fritzsche Brothers) . t 90°/o). The authors converted this menthol fraction into its acid phthalate,which gave m. p. 140 to 143°, [a]D + 4,58°. The ester was recrystallised28 times from 95°/o acetic acid, after which it melted between 141 and 144°,the specific rotation being +57,16° (in chloroform). Mixed with d-neo-menthyl phthalic ester, the ester melted between 142 and 144°. The alcoholwhich was regenerated from the ester, when oxidised with Beckmannschromic acid mixture, yielded Z-menthone ([«]D— 28,33°). The odour of d- and Z-neomenthol differs altogether from that ofd- and Z-menthol. The following arrangement explains the reactions described by theauthors: — Thymol I I 1 Menthone Isomenthone (Semicarbazone m. p. 158°) (Semicarbazone m. p. 217°) I I Menthol m. p. 34°(Phthalic ester m. p. 130°) IiVeomenthol m. p. 51°(Phthalic ester m. p. 177°) I I ^-Menthol d-Menthol ]D + 19,6°) ([«]D-19,6°) liquid liquid. Z-Menthone ^-Menthone — 181 — I P. F. Frankland and H. H. Sullivan1), when reacting with ammonia upon menthyl chloroacetate, obtained the menthyl ester of Heintz nitrilotriaceticacid2) N(CH2-CCVCioHi^, a compound which crystallises in prismaticneedles; m. p. 80,5°. Fatty-aromatic alcohols. At the present time we possess threemethods3) for the preparation of a fatty-aromatic alcohol XCH2OH, orits halogen ester XCH2C1 from the alcohol X-OH or halogenide are: first, condensation with cyanide of potassium, saponificationof the nitrileX-CN into acid, esterification into the ester X-C02C2H5 andreduction of this ester into the alcohol XCH2OH according to , reaction with magnesium into X-MgCl and conversion into thealcohol XCH2- OH by means of trihydroxymethylene according to , reduction of the nitrileX-CN into the base XCH2-NH2 and con-version of the benzoyl-compound of the latter with phosphorus pentachlorideinto the chloride X-CH2C1 accordin
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