1: allyl-magnesium chloride With gallium(III) chloride in tetrahydrofuran; hexane T=25°C; 0.333333 h; 2: 2-bromo-N,N-dimethylpropionamide With air; triethyl borane in tetrahydrofuran; hexane; water 2 h;

sodium hydrogencarbonate in tetrahydrofuran; water Ambient temperature; Yield given;

triethyl borane; oxygen in tetrahydrofuran; water 2 h;

1,1'-carbonyldiimidazole 1.) room temperature, 2 h; Yield given. Multistep reaction;