The preparation of five new cis-2, 3-di-R-cyclopropanones is described where R= tert-amyl, thexyl, 2-(2, 3, 3-trimethylbutyl), 1-adamantyl and 1-(7, 7-dimethylnorbornyl). As structure proof for these labile compounds, the [3+ 4] furan adducts were characterized, and the cis cyclopropanones were also converted into th
![2-(7,7-dimethyl-4-bicyclo[2.2.1]heptanyl)acetic acid Structure](https://image.chemsrc.com/caspic/017/63805-63-0.png)