## Abstract For Abstract see ChemInform Abstract in Full Text.
A convenient route to α,β-unsaturated methyl ketones application to retinal analogue synthesis
✍ Scribed by Allan A. Croteau; John Termini
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- French
- Weight
- 188 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
✦ Synopsis
Deprotonated ketimines la,b add to aldehydes and ketones to provide -trl-and tetra-substituted a,K-unsaturated methyl ketones e,b with substantial percentage of +geometry which are not readily accessible by other methods.
📜 SIMILAR VOLUMES
a-Fluoro-a,b-unsaturated ketones were prepared from trifluoromethyl ketones via a sequence involving Mg metal promoted successive double defluorination. Trifluoromethyl ketones were transformed to b,b-difluoroenol silyl ethers which were then coupled with aldehydes and ketones to b-hydroxy-a,a-diflu
## Hypervalent iodine oxidation of aryl methyl ketones using two equivalents of iodosobenzene diacetate leads to 1.2-aryl migration followed by solvohyperiodination to yield the corresponding methyl a-methoxyarylacetates.
## Abstract A new approach to the synthesis of α, β‐unsaturated ketones from 1,2,3‐trimethyl benzimidazolium salt via the condensation reaction with aldehydes followed by the addition reaction of Grignard reagents with quaternary C=N bond was provided.
a-sulfonyl Lithiated anions are oxidized by cupric carboxylates into o,p-unsaturated sulfones. Primary sulfones lead to pure trans-vinylic sulfones.