Action of the single electron transfer (SET) reagentsodium naphthalenide on 3-substituted indoles revealed that indoles with electron-donating substituents do not respond whereas indoles with electron-withdrawing substituents easily react, yielding several products depending upon the substituent.
3-substituted acylindole 8a is readily converted into 4-aminopyrazol-3-ylindoles 20, and into 22. Indole reacts with chloroacetyl chloride to yield: 3-chloroacetylindole 9 which could also be utilized for synthesis of a number of 3-substituted indoles.
Sanna, Rendiconti del Seminario della Facolta di Scienze dell'Universita di Cagliari, 1940, vol. 10, p. 40,43
作者:Sanna
DOI:——
日期:——
Sanna, Gazzetta Chimica Italiana, 1923, vol. 53, p. 178
作者:Sanna
DOI:——
日期:——
Effect of sodium naphthalenide, a key SET reagent, on trifluoroacetyl derivatives
作者:Avijit Banerji、Debasish Bandyopadhyay、Bidyut Basak、Kumar R. Sur、Jyoti N. Paul、Julie Banerji、Asima Chatterjee
DOI:10.1016/j.tetlet.2005.08.052
日期:2005.10
Aromatic trifluoroacetyl derivatives on treatment with single electron transfer (SET) reagent, sodium naphthalenide, yield symmetrical defluorinated dimers, whereas for aliphatic trifluoroacetyl compounds the reaction usually fails. Investigations have been made for different substituents as well as for similar types of chloro and bromo compounds to establish the scope of the reaction.