1: With pyridine-SO3 complex; triethylamine in dimethyl sulfoxide; toluene T=10°C; 2: (2-cyclopropyl-7,8-dimethoxy-2H-chromen-5-yl)-methanol in water; dimethyl sulfoxide; toluene T=20°C; 3: With water in dimethyl sulfoxide; toluene T=20°C; Product distribution / selectivity;

sodium hydroxide in ice-water; ethyl acetate; toluene

3-Methylpyridine in para-xylene T=160°C; 25 h; Product distribution / selectivity;