Formylation of ethylene ketals. Synthesis of α-monoalkyl ketals and ketones
✍ Scribed by Raymond D. Youssefyeh
- Publisher
- Elsevier Science
- Year
- 1964
- Tongue
- French
- Weight
- 258 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0040-4039
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📜 SIMILAR VOLUMES
Synthetic routes to a(-methylene carbonyl compounds C\_ have received considerable attention (1 -4). Most of them involve either a p-elimination from Mannich
The dimers(La & b) of dimethyl-and diethylcyclopentadienone ketals(la & b) undergo a novel 1,3-alkoxy-rearrangement to 4\_(a & b). Mild hydrolysis of 2 or 3 gives the monoketones (?a or b). On strong acid catalysed hydrolysis 2, 5. or 4 afford the cyciopentadienone-dimer(6) In contrast to the notor
## Abstract For Abstract see ChemInform Abstract in Full Text.
Enantiomerically pure acylketene acetals were employed to generate a homochiral p-keto ketal through a highly diastereoselective lithium enolate quench. The fi-keto ketal, which was also prepared through a desymmetrization ketulizution reaction on a meso dione, was employed in the synthesis of the i