1: iso-butyronitrile With lithium diisopropyl amide in tetrahydrofuran T=-78°C; 2: (E)-hexa-3,5-dienyl bromide in tetrahydrofuran T=-78°C;

1: anhydrous propionitrile With lithium diisopropyl amide in tetrahydrofuran T=-78°C; 2: (E)-hexa-3,5-dienyl bromide in tetrahydrofuran T=-78°C;