potassium carbonate in acetone T=60°C; 2 h;

in benzene T=15°C; 1.5 h; Irradiation;

1.1: BH3 / tetrahydrofuran / 4 h / 20 °C 1.2: 71 percent / aq. NaOH; H2O2 / tetrahydrofuran / 4 h / 20 °C 2.1: 71 percent / aq. Fremy's salt; sodium acetate / methanol; dimethylformamide / 8 h / 20 °C 3.1: 95 percent / dichlorodicyanobenzoquinone (DDQ); p-toluenesulfonic acid monohydrate / benzene / 0.5 h / Heating 4.1: 86 percent / aq. NaOH / 2 h / Heating 5.1: 89 percent / aq. H2SO4 / CH2Cl2 / 5 h / Heating View Scheme

[14C]-Dimethylnitrosamine

1.1: K2CO3 / acetone 1.2: 90 percent / acetone / 12 h / Heating 2.1: Na2*EDTA / acetonitrile; acetone / 0 - 1 °C 2.2: 60 percent / NaHCO3; Oxone / acetonitrile; acetone / 1.3 h / 0 - 1 °C 3.1: 68 percent / H2; K2CO3 / 10 percent Pd/C; Et3N / methanol / 12 h / 20 °C View Scheme