Theoretical study of the electronic and steric effects in the inter and intramolecular radical additions
β Scribed by Joan Igual; Josep Ma. Poblet; J.Pedro Sarasa
- Book ID
- 119116725
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 622 KB
- Volume
- 136
- Category
- Article
- ISSN
- 0166-1280
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π SIMILAR VOLUMES
The ligands on a silicon atom in allylsilanes were found to influence the efficiency of their reaction with ketones in the presence of MnO2. An electrondonating group on silicon provided a promoting effect, yet the steric effect of a bulky silyl group retarded the addition process.
Hindered biaryls and heterobiaryls are even easier to prepare by intramolecular free radical [1,5] ipso substition using sulfonamide and sulfonate tethering chains, since the introduction of either electron releasing or electron withdrawing groups ortho to the sulfonyl substituted acceptor ring faci