NEW ORGANOCOPPER SYNTHETIC METHODS. α,β-DIALKYLATION OF α,β-ETHYLENIC KETONES: SYNTHESIS OF SESQUITERPENES
✍ Scribed by G. H. Posner; C. E. Whitten; J. J. Sterling; D. J. Brunelle; C. M. Lentz; A. W. Runquist; A. Alexakis
- Book ID
- 114883293
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- English
- Weight
- 181 KB
- Volume
- 295
- Category
- Article
- ISSN
- 0890-6564
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As a continuation of our interest in the chemistry of phosphorus(V) enamines, 2 we wish to report the usefulness of enamine phosphonates 2 in the preparation of a,@-ethylenic ketones 2. Reported information on the preparation of compounds like 2 is rather limited.3\*4'5 We have found that ;? can be
This was evidenced by uv spectra (in EtOH): e, Amax 238 nm (E 2800), cyclopentadiene, A max 238 nm (E 4230). 6 D. Peters, J. Chem. Sot. , 1761 (1959).
## Abnticx : A MW 6ynthend 04 ~2-buttnotidti ih de.bcLbcd which .&o&m h.kt&Oh&Lc-Live condenntion 06 an cx-htiyt uteh anion ukth an cu-hetoacefal. Unsaturated five membered ring lactones, butenolides, occur widely in nature and display a wide range of interesting properties (1). Despite the great