Synthesis of 2-Aryl-1-hydroxyazaindolesand 2-Arylazaindoles via Oxidation of <i>o-</i>Hydroxyaminostyrylpyridines
作者:Daniel Kuzmich、Carol Mulrooney
DOI:10.1055/s-2003-40884
日期:2003.8
are prepared via an oxidation/cyclization of o-hydroxyaminostyrylpyridines with DDQ. Reduction of the N-OH bond affords the corresponding 2-arylazaindoles (1H-pyrrolopyridines). The scope of the cyclization is explored via (i) the condensation of 4-methyl-3-nitropyridine with various aryl aldehydes to afford 2-aryl substituted 6-azaindoles and, (ii) the synthesis of 2-phenyl-4-, 5- and 7-azaindoles.