Additions of halogens to olefins are believed to normally proceed via a cyclic three-membered ring halonium ion intermediate which is opened subsequently by a halide nucleophile. Other anions can be used to introduce
Stereospecific additions to olefins. The iodonium ion
β Scribed by Alfred Hassner; Clayton C. Heathcork
- Publisher
- Elsevier Science
- Year
- 1964
- Tongue
- French
- Weight
- 224 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
## Abstract The reaction of trisβcrotylβboron with vinylic olefins in the presence of triethylβaluminium, results in the addition of an Ξ±βmethylallyl group and an aluminium atom to the double bond, as indicated by the hydrolysis products. The stereochemical aspect of the reaction is discussed and a
tations, while those with inorganic electron acceptors (except 0 2 ) are described as anaerobic respiration. Respiration occurs when oxygen acts as the terminal oxidant. Terms such as "fumarate respiration" and "inorganic fermentation" are incompatible with this view. A self-consistent definition o