potassium carbonate in ethanol T=78°C; 5 h;

1.1: NaH / tetrahydrofuran / 0.5 h / Heating 1.2: 45 percent / tetrahydrofuran / 4 h / Heating 2.1: 12 percent Chromat. / Bu3SnH; DABCO; azobismethylisobutyronitrile / cyclohexane / Heating View Scheme

1.1: NaH / tetrahydrofuran / 0.5 h / Heating 1.2: 45 percent / tetrahydrofuran / 4 h / Heating 2.1: 12 percent Chromat. / Bu3SnH; DABCO; azobismethylisobutyronitrile / cyclohexane / Heating View Scheme

1,4-diaza-bicyclo[2.2.2]octane; Vazo®-67; tri-n-butyl-tin hydride in cyclohexane Cyclization; Reduction; Heating; Title compound not separated from byproducts.;