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On the 1,6-addition of alkylamuninium compounds to para-quinones
✍ Scribed by Zbigniew florjańczyk; Ewa Szymańska-Zachara
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 683 KB
- Volume
- 259
- Category
- Article
- ISSN
- 0022-328X
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Reactions between 2,6-dialkyl-l,4-benzoquinones and various free radicals have been studied by ESR spectroscopy. The stable intermediates were identified on the basis of their spectra. It has been established that cyanoisopropyl, polystyryl and poly-(ct-methylstyryl) radicals attack at the oxygen at
The trans-selective addition of alkyl lithiums to oxazines generates 4-lithiated 1,2-oxazines, which are trapped with electrophiles to give 5,6-trans-substituted oxazines as major products. -(ZIMMER, REINHOLD;
The radical reactions of 2,6-di-t. butyl-1,4-benzoquinone with various thermally decomposing azocompounds and peroxides have been studied by ESR. On the basis of the ESR spectra of the intermediate radicals, the mechanism of the reaction is suggested. It was found that, while primary alkyl radicals