1: 78 percent / HBF4*Et2O / CH2Cl2 / 1.17 h / Ambient temperature 2: 74 percent / Et3N, MCPBA / diethyl ether / 2.25 h / Ambient temperature View Scheme

1: PhMe2SiLi With 2,2'-dihydroxy-1,1'-biphenyl; n-butyl-magnesium chloride; zinc(II) chloride in tetrahydrofuran T=0°C; 0.5 h; 2: phenylenemethyl-ethylene With CuCN in tetrahydrofuran T=20°C; 15 h; Title compound not separated from byproducts;

bis(cyclopentadienyl)titanium dichloride; 4 A molecular sieve; magnesium; triethyl phosphite in tetrahydrofuran 1.5 h; Ambient temperature;

Pd[P(t-Bu)3]2; N-ethyl-N,N-diisopropylamine in acetonitrile T=50°C; 72 h; Inert atmosphere;

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tetrafluoroboric acid diethyl ether complex in dichloromethane 2 h; Ambient temperature;