1: chloro-(2-methylpropyl)magnesium; N-benzyl-2-methylene-aziridine With copper(l) iodide in tetrahydrofuran T=-30 - 20°C; 18 h; 2: potassium cyanide; (NH4)2CO3 in tetrahydrofuran; ethanol; water T=75°C; 24 h;