sodium periodate; water; potassium hydroxide

pectinase from Aspergillus niger; water T=50°C; pH=4.5; 48 h; aq. acetate bufferEnzymatic reaction;

pectinase from Aspergillus niger T=50°C; pH=4.5; 48 h; aq. acetate buffer;

1: With sodium periodate in water T=20°C; 48 h; Darkness; 2: With water; potassium hydroxide 1.5 h; HeatingDarkness;

chromium(VI) oxide; sulfuric acid in acetone 4 h; Ambient temperature;

1: HgBr2 / 5 h / 95 °C / 5 Torr 2: 2.4 g / 0.01 percent NaOMe / methanol / 3 h / Ambient temperature 3: 840 mg / silver triflate, 2,4,6-collidine / CH2Cl2 / 5 h / 0 °C 4: 0.01 percent NaOMe / methanol / 3 h / Ambient temperature 5: NaH / dimethylformamide / 3 h / Ambient temperature 6: 45 percent / liq. NH3, Na metal / tetrahydrofuran / 3 h / -30 °C 7: 1.) NaIO4, 2.) CaCO3 / 1.) H2O, RT, 16 h, 2.) RT, 24 h, View Scheme

1: 840 mg / silver triflate, 2,4,6-collidine / CH2Cl2 / 5 h / 0 °C 2: 0.01 percent NaOMe / methanol / 3 h / Ambient temperature 3: NaH / dimethylformamide / 3 h / Ambient temperature 4: 45 percent / liq. NH3, Na metal / tetrahydrofuran / 3 h / -30 °C 5: 1.) NaIO4, 2.) CaCO3 / 1.) H2O, RT, 16 h, 2.) RT, 24 h, View Scheme

1: 2.4 g / 0.01 percent NaOMe / methanol / 3 h / Ambient temperature 2: 840 mg / silver triflate, 2,4,6-collidine / CH2Cl2 / 5 h / 0 °C 3: 0.01 percent NaOMe / methanol / 3 h / Ambient temperature 4: NaH / dimethylformamide / 3 h / Ambient temperature 5: 45 percent / liq. NH3, Na metal / tetrahydrofuran / 3 h / -30 °C 6: 1.) NaIO4, 2.) CaCO3 / 1.) H2O, RT, 16 h, 2.) RT, 24 h, View Scheme

1: NaH / dimethylformamide / 3 h / Ambient temperature 2: 45 percent / liq. NH3, Na metal / tetrahydrofuran / 3 h / -30 °C 3: 1.) NaIO4, 2.) CaCO3 / 1.) H2O, RT, 16 h, 2.) RT, 24 h, View Scheme

1: 0.01 percent NaOMe / methanol / 3 h / Ambient temperature 2: NaH / dimethylformamide / 3 h / Ambient temperature 3: 45 percent / liq. NH3, Na metal / tetrahydrofuran / 3 h / -30 °C 4: 1.) NaIO4, 2.) CaCO3 / 1.) H2O, RT, 16 h, 2.) RT, 24 h, View Scheme