1) Berl. Berichte 23 (1890), 862.
Japanese staranise oil, kobuschi oil (?), in the oils of Persea gratissima, bay, anise, chervil, fennel, Pseudocymopterus anis-atus, in German, French and Japanese basilicum oils, in esdragon oil, and in American wood turpentine oil. It has also been obtained synthetically.
Methylchavicol is a colorless liquid with a slight anise-like odor, but which does not possess the intensively sweet taste of anethol. It is optically inactive; boils at 215 to 216° (corr.);1) d115o 0,979; nD1,5244.2) According to Schimmel & Co. the ether isolated from esdragon oil possesses the following properties:
B. p. 97 to 97,5° (12 mm.); 86° (7 mm.); d15o0,9714 to 0,972; nD16o 1,52355 to 1,52380.
Methylchavicol can be characterized by its conversion into the solid anethol by boiling it with alcoholic potassa, or by its conversion into homoanisic acid (p-methoxy phenyl acetic acid)3) which melts at 86°. In addition, however, anisic acid, m. p. 184°, which likewise results from anethol, is also formed. A confounding of the two phenol ethers, however, can be avoided by attention to the differences in the physical constants. Monobrommethyl-chavicol dibromide,4) which melts at 62,4°, can also be used for the identification of the ether.