copper(l) iodide; lithium chloride in tetrahydrofuran T=0°C; 0.5 h;

triethylamine in chloroform 16 h; Heating;

copper(I) iodide-lithium chloride in tetrahydrofuran T=0°C; 0.5 h; other α,β-unsaturated ketones and esters; other Grignard reagents; var. catalysts, var. temperatures; Product distribution;

(i), (ii) /BRN= 385737/; Multistep reaction;