Synthesis of novel methoxy and hydroxy derivatives of 2-phenyl-1H-benz[g]indoles

The synthesis of novel methoxy-derivatives of 2-phenyl-1H-benzg]indole 3 by condensation of α-naphthyl-amines 1 with N-phenacyl-pyridinium salts 2 is described, as well as their conversion into the corresponding hydroxy-derivatives 5 . Unexpected quinoxaline derivatives 4 were obtained when in the condensation reaction the N-nitrophenacylpyridinium salts 2d,e have been used.