Abstract
A study was made of the decomposition reactions of (-) -isolongifolene oxide (1), (-) -thu-jopsene oxide (2), and (-) -α-cedrene oxide (3) with formic acid or chlorinated acetic acids, in the presence of synthetic zeolites.
In the reactions of (1), two components were formed at all conditions ; conversion exceeded 90 % irrespective of the type of zeolite used, and in reactions with trichloroacetic acid in 1, 2-dichloroethane using ferrierite type zeolite, (5) was obtained almost quantitatively.
The reactions of (2) yielded four kinds of products, the principal component of which was methyl 6, 10, 10-trimethyl-tricyclo [4.4.0.01, 3] dec-4-yl ketone (8). Considerable difference in composition was observed depending on the type of acid used. The reactions of (3) also gave the best results under conditions the same as for (1) with quantitative conversion. (-) -2-Cedranone (10) at a composition ratio over 90 %, at 2025°C was obtained.
