Cu (I) catalyzed 1, 4-Grignard reaction of the key compound 6 led to the bicyclic keto ethers 7-15 together with small amounts of the alcohols 16-25. Wolff-Kishner reduction of 8-15 gave the 1, 8-cineol homologues 26-32 and sesquicineol (2).-The fresh and camphoraceous odor of 1 changes stepwise with increasing side chain to herbaceous and spicy notes, compounds with branched side chains show lavender undertones. 2 has a pleasant fruity, ...
![1,5-Dimethyl-8-oxatricyclo[3.2.1.02.7]octan-6-one Structure](https://image.chemsrc.com/caspic/016/107553-95-7.png)