## Abstracts The reactions of 4-methyl-1,2,4-t with allylic ethers aad ftdidea have beea examhd. The diffemt mspowes of the regicchemistty io the two mctio: sea-k4 to changty in the eleetroaic charam of the
Substituent field effects on the regiochemistry of the ene reaction
β Scribed by Clennan, E. L.; Koola, Jaya J.
- Book ID
- 126776549
- Publisher
- American Chemical Society
- Year
- 1993
- Tongue
- English
- Weight
- 224 KB
- Volume
- 115
- Category
- Article
- ISSN
- 0002-7863
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π SIMILAR VOLUMES
Our interest in the tandem Claisen-ene rearrangement' and the desire to develop efficient methods for the control of both the regio-and stereochemistry of the ene reaction for eventual applications in organic synthesis led us to explore the role of the trimethylsilyl group as a controlling unit. I?
## Consistent with our hypothesis for a mechanism involving two kinetically-distinct diradical intermediates, the observed effects of styrene a-substituents can be explained as deriving either from steric effects or radical stabilizing effects.
The regioselectivity of a Baeyer-Villiger oxidation of a cyclobutanone is dependent upon the oxidation state of a proximal selenium substituent. for the selenium dioxide-hydrogen peroxide oxidation of ketones. Sharpless, K. B. ; Gordon, K.M. J. Am. Chem. Soq . 1976, 98, 300. 9. It can be argued that