sodium cyanoborohydride in acetic acid T=20°C; 12 h;

Zn(2+) montmorillonite Cyclization; 3-Aza-Cope rearrangement; 0.05 h; microwave irradiation;

1: [{(η5-C5Me5)RhCl}2(μ-Cl)2]; silver hexafluoroantimonate; copper diacetate; silver carbonate / 1,4-dioxane / 24 h / 110 °C / |Schlenk technique; |Inert atmosphere 2: potassium hydroxide / tetrahydrofuran; ethanol / |Reflux 3: sodium cyanoborohydride; acetic acid / 12 h / 20 °C View Scheme

1: potassium hydroxide / tetrahydrofuran; ethanol / |Reflux 2: sodium cyanoborohydride; acetic acid / 12 h / 20 °C View Scheme