Steric course of the addition of nucleophiles to 2-phenyl-1,3-dioxan-5-one
β Scribed by J.C. Jochims; Y. Kobayashi; E. Skrzelewski
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- French
- Weight
- 195 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Six-membered ring ketones such as 4 butyl-cyclohexanone, I, are attacked by nucleophiles (e.g., Grignard reagents or metal hydrides) from two different sites giving rise to products E with an equatorial OH group, and A with.an axial OH group. The ratio of the amounts the rate constants 1, 2) have recently been attributed two factors:
π SIMILAR VOLUMES
## Abstract The organocatalytic asymmetric Michael addition of 2,2βdimethylβ1,3βdioxanβ5βone (**1**) was performed with various nitro alkenes **2** using a number of prolineβbased catalysts (**A**β**M**) affording polyfunctional nitro ketones **3**. Reverse diastereoselectivity was observed with th