. Annual report on essential oils, synthetic perfumes, &c. Essences and essential oils; Perfumes. 148 Report of Schimmel § Co. 1922. in light petroleum. When trying to reduce it to furyl camphor by catalytic reduction according to Sabatier and Senderens in presence of nickel, it was completely reduced to tetrahydrofurylcamphor, b. p. 166° (14 mm.). Following the process worked out by Haller and Bauer1) the author prepared, via the organomagnesium compounds:— phenylfurylcamphor CioHisO-CHCCbHs^CJIbO, 114°, benzylfurylcamphor, C10Hi5O • CH(C7H?) • C4H30 (viscid oil); p-tolylf urylcampho
. Annual report on essential oils, synthetic perfumes, &c. Essences and essential oils; Perfumes. 148 Report of Schimmel § Co. 1922. in light petroleum. When trying to reduce it to furyl camphor by catalytic reduction according to Sabatier and Senderens in presence of nickel, it was completely reduced to tetrahydrofurylcamphor, b. p. 166° (14 mm.). Following the process worked out by Haller and Bauer1) the author prepared, via the organomagnesium compounds:— phenylfurylcamphor CioHisO-CHCCbHs^CJIbO, 114°, benzylfurylcamphor, C10Hi5O • CH(C7H?) • C4H30 (viscid oil); p-tolylf urylcamphor, C10H15OCH(C6H4-CH3)C4H3O, 234° (17 mm.); ^-anisylfurylcamphor, C10H15O-CH (C6H4OCH3)-C4H30, 255° (17 mm.). In a later communication, the author publishes the molecular refractions and the specific rotations of the above-mentioned compounds, which agree with the constants found formerly by Haller and Miiller2) with the condensation-products from camphor and aldehydes. Furalcamphor shows a strong exaltation of the molecular refraction, the specific rotation, and the molecular dispersion, which is caused by the double bond linked to the furane nucleus and which disappears on reduction. In connection with earlier work done on mono- and dialkyl derivatives of camphor3), A. Haller and P. Ramart4) communicate that the amide of dimethylcampholic acid shows the m. p. 81 to 82° and not, as stated before5), 72 to 73°. On reducing this amide with sodium and absolute alcohol, the authors obtained, on rectification, the nitrile of dimethyl- /CH(CH3)2 campholic acid C8H14<^ ( 131 to 133° [14 mm.], 245 to 247° [ord. press.]). On heating with sulphuric acid to 85 to 100° the nitrile again passes over into the original amide (m. p. 81 to 82°). When the nitrile was reduced with sodium and absolute alcohol, dimethylcampholamine ( 123 to 124° at 20 mm.; [«]D25o +°) resulted in quantitative yield. By reducing the phenyl ester of dimethylcampholic acid
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