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Phenyleffekte bei radikalischen Additionen an Alkene (1983)

Giese, Bernd ; Kretzschmar, Gerhard

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 116 (1983), S. 3267-3270

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ISSN: 0009-2940

Keywords: Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Phenyl Effects in Radical Additions to AlkenesReactions of cyclohexylmercuric salts 4 with NaBH4 in the presence of alkenes 8 yield products 10. The main step of the reaction sequence, the addition of a cyclohexyl radical (7) to alkene 8, can be measured using a competition technique. The data show that styrene reacts 30-40 times faster than expected by the σ-p-value. This phenyl effects decreases in going from monosubstituted alkenes 8 to disubstituted alkenes 3, 2 and 1 because the steric hindrance of a coplanar orientation of the π-system increases in the same order.

Additional Material: 1 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/cber.19831160923

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