Efficient Nickel-Mediated Intramolecular Amination of Aryl Chlorides
摘要:
[GRAPHICS]The use of an in situ generated Ni(0) catalyst associated with 2,2'-bipyridine or N,N'-bis(2,6-diisopropylphenyl)dihydroimidazol-2-ylidene (SIPr) as a ligand and NaO-t-Bu as the base for the intramolecular coupling of aryl chlorides with amines is described. The procedure has been applied to the formation of five-, six-, and seven-membered rings.
Synthesis of 2,3-Dihydroindoles, Indoles, and Anilines by Transition Metal-Free Amination of Aryl Chlorides
作者:Matthias Beller、Claudia Breindl、Thomas H. Riermeier、Annegret Tillack
DOI:10.1021/jo001544m
日期:2001.2.1
and 3-chlorostyrene in the presence of potassium tert-butoxide to give N-substituted 2,3-dihydroindoles in good yields. The combination of this domino-amination protocol with a suitable dehydrogenation reaction gives access to pharmacologically interesting indoles in a one-pot procedure. Overall product yields of N-substituted indoles >50% are obtained by this method starting from commercially available
Efficient Nickel-Mediated Intramolecular Amination of Aryl Chlorides
作者:Rafik Omar-Amrani、Antoine Thomas、Eric Brenner、Raphaël Schneider、Yves Fort
DOI:10.1021/ol034659w
日期:2003.6.1
[GRAPHICS]The use of an in situ generated Ni(0) catalyst associated with 2,2'-bipyridine or N,N'-bis(2,6-diisopropylphenyl)dihydroimidazol-2-ylidene (SIPr) as a ligand and NaO-t-Bu as the base for the intramolecular coupling of aryl chlorides with amines is described. The procedure has been applied to the formation of five-, six-, and seven-membered rings.