N,N,N',N',N'',N''-hexamethylphosphoric triamide; copper(l) iodide; 1-chloro-2-methyl-N,N-tetramethylenepropenylamine in tetrahydrofuran; dichloromethane T=-30 - 0°C; 0.75 h; Yield given. Yields of byproduct given;

lithium bromide T=-25°C; Title compound not separated from byproducts.;

T=100°C;

Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;