Preparation and x-ray structure analysis of bicyclo[4.2.1]non-3-en-2-one derivatives
- Publication Type
- Journal contribution
- Authors
- Kraus, W.; Patzelt, H.; Sadlo, H.; Sawitzki, G.; Schwinger, G.
- Year of publication
- 1981
- Published in
- Liebigs Ann. Chem.
- Band/Volume
- 10/
- Page (from - to)
- 1826-37
Bicyclononenones I (R = CO2Me, R1 = H, R2 = Cl, Br, H; R = H, R1 = Cl, R2 = Br) were prepd. from bicyclooctenes by dihalocarbene addn. In all I the 5-membered ring had the half-chair conformation and the 7-membered a twisted chair conformation, whereas the enone system was planar in I (R = CO2Me, R1 = H, R2 = Br, H) and distorted in the other 2 I.