Reaction of peroxyacetals with silyl ketene acetals: synthesis of 3-peroxyalkanoates and 3-peroxyalkanals
β Scribed by P.H Dussault; R.J Lee; J.A Schultz; Y.S Suh
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- French
- Weight
- 163 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Lewis acid-mediated reaction of monoperoxyacetals with silyl ketene acetals (SKAs) provides an ecient approach to 3-peroxyalkanoates. Propionate SKAs react with aliphatic peroxyacetals to furnish 3-peroxy-2-methyl alkanoates with modest anti-selectivity. Although acetate and thioacetate SKAs are less reactive, the latter react with unsaturated peroxyacetals to furnish peroxyalkenoates and -alkadienoates which undergo chemoselective reduction to 3-peroxyalkenals and 3-peroxyalkadienals.
π SIMILAR VOLUMES
## Abstract Theoretical calculations at the DFT level indicate that the reaction of a nitrone with a silyl ketene acetal proceeds, contrary to previous suggestions, through a classical 1,3βdipolar cycloaddition, followed by a silyl group transfer step to give the openβchain product. Introduction of