1: C10H17NO With sec.-butyllithium in tetrahydrofuran T=-78°C; 2: allyl bromide in tetrahydrofuran T=-78 - 20°C; Further stages.;

1.1: s-BuLi / tetrahydrofuran / -78 °C 1.2: tetrahydrofuran / -78 - 20 °C 2.1: s-BuLi / tetrahydrofuran / -78 °C 2.2: tetrahydrofuran / -78 - 20 °C View Scheme