Cinnolines having electron-withdrawing substituents at 4-position reacted with ynamines to give naphthalene derivatives and/or quinoline derivatives through [4+2] cycloaddition followed by elimination of nitrogen or hydrogen cyanide.
Cinnolines having electron-withdrawing substituents at 4-position reacted with ynamines to give naphthalene derivatives and/or quinoline derivatives through [4+2] cycloaddition followed by elimination of nitrogen or hydrogen cyanide.