1: 2-Brom-1,3-bis-(p-chlorphenyl)-propan-1,3-dion With triethyl phosphite in tetrahydrofuran T=20°C; 1 h; 2: Me2Cu(CN)Li2 With boron trifluoride diethyl etherate in tetrahydrofuran; diethyl ether T=-78°C; 2 h;

<b>Multi-step reaction with 2 steps<br /> </b>1: (i) AlCl₃, (ii) aq. HCl<br />2: Br₂, Py<br /> <br /> &nbsp;