Carbon-phosphorus heterocycles. New route to tetrahydrophosphinolines, tetrahydroisophosphinolines, and related systems via cyclization of alkenyl-substituted phosphonium salts with 115% polyphosphoric acid
Carbon-phosphorus heterocycles. New route to tetrahydrophosphinolines, tetrahydroisophosphinolines, and related systems via cyclization of alkenyl-substituted phosphonium salts with 115% polyphosphoric acid