iron(II) sulfate in chloroform 0.5 h; Yield given;

5,10,15,20-tetrakisphenylporphyrinatoiron(III) chloride in chloroform-d1 26 h;

iron(II) sulfate in water; acetonitrile T=0°C; 0.5 h; Product distributionMechanism;

iron(II) sulfate in acetonitrile 0.5 h; further electron transfer reag.; var. solv. and time; Product distribution;

Multi-step reaction with 6 steps 1: 1.) L-Selectride, 2.) n-Bu4NF / 1.) THF, -78 deg C. 30 min, 2.) THF, RT, 3 h2: 87 percent / Et3N / CH2Cl2 / 1 h / 0 °C3: 65 percent / 18-crown-6 / toluene / 8 h / Heating4: 81 percent / NaOMe / methanol / 1 h / Ambient temperature5: pyridine / CH2Cl2 / 0.5 h / 0 °C6: (n-Bu3SnO)2 / CH2Cl2; diethyl ether / 1 h / 0 °C  

Multi-step reaction with 5 steps 1: 87 percent / Et3N / CH2Cl2 / 1 h / 0 °C2: 65 percent / 18-crown-6 / toluene / 8 h / Heating3: 81 percent / NaOMe / methanol / 1 h / Ambient temperature4: pyridine / CH2Cl2 / 0.5 h / 0 °C5: (n-Bu3SnO)2 / CH2Cl2; diethyl ether / 1 h / 0 °C