1: 1-[(benzyloxy)methyl]-2-vinylbenzene With n-butyllithium; zirconocene dichloride in tetrahydrofuran; hexane T=-78 - 20°C; 2: allyl bromide With copper(l) chloride in tetrahydrofuran; hexane 5 h; Heating;

1.1: 96 percent / NaH / tetrahydrofuran / 0 - 20 °C 2.1: Cp2ZrCl2; n-BuLi / tetrahydrofuran; hexane / -78 - 20 °C 2.2: 88 percent / CuCl / tetrahydrofuran; hexane / 5 h / Heating View Scheme

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