The Preparation and Resolution of 2,2'-Diiodo-5,5'-dicarboxybiphenyl and of 2,2',3,3'-Tetraiodo-5,5'-dicarboxybiphenyl
β Scribed by Rieger, Martin; Westheimer, F. H.
- Book ID
- 120249310
- Publisher
- American Chemical Society
- Year
- 1950
- Tongue
- English
- Weight
- 652 KB
- Volume
- 72
- Category
- Article
- ISSN
- 0002-7863
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π SIMILAR VOLUMES
has been reported1 to be non-resolvable because four methoxy-groups were considered inadequate fey obtaining restricted rotation and this fact is generally accepted. 2 Wowever, the fact was considered to be inconsistent with the isolation of optically active biflavonyls belonging to the Cupressufla
## Abstract Biphenylβ2,2β²,3,3β²,5,5β²,6,6β²β^2^H~8~ was prepared from biphenylβd~10~. Initial bromination of biphenylβd~10~ followed by hydrogenolysis of the 4,4β²βdibromobiphenylβd~8~ with lithium aluminum hydride gave the desired product in 40% overall yield.