4-hydroxy-2,2,6,6-tetramethyl piperidinyloxy, free radical; oxygen; 4-methoxy-phenol; water; CaO; lithium hydroxide hydrate T=70 - 100°C; Industry scale;

4-hydroxy-2,2,6,6-tetramethyl piperidinyloxy, free radical; oxygen; 4-methoxy-phenol; Ca(OH)2; lithium hydroxide hydrate T=70 - 100°C; Industry scale; Product distribution / selectivity;