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Selectivity of radical ipso attack. Alkyldeacylation reactions by dioxanyl radicals in unprotonated acetylpyri dines

✍ Scribed by F. Maiolo; L. Testaferri; M. Tiecco; M. Tingoli


Publisher
Elsevier Science
Year
1981
Tongue
French
Weight
119 KB
Volume
22
Category
Article
ISSN
0040-4039

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✦ Synopsis


Under neutral conditions the reaction of dioxanyl radicals with 2,5_diacetylpyridine gives the ipso substitution products; on the contrary, in the presence of sulphuric acid the substitution occurs at the Z-and 4-positions.