1: (4-methoxyphenyl)-boronic acid With palladium diacetate; sodium carbonate; triphenylphosphine in toluene T=20°C; Suzuki coupling; Inert atmosphere; 2: 3,4-Dibromo-thiophene With sodium carbonate in toluene T=20°C; Suzuki coupling; Inert atmosphereReflux;

methyloxirane in 1,2-dichloro-ethane 0.75 h; Heating; Yield given. Yields of byproduct given;

1.1: n-butyllithium / tetrahydrofuran / -78 °C / Inert atmosphere 1.2: -78 - 20 °C / Inert atmosphere 1.3: Inert atmosphere 2.1: palladium diacetate; sodium carbonate; triphenylphosphine / toluene / 20 °C / Inert atmosphere 2.2: 20 °C / Inert atmosphere; Reflux View Scheme

in 1,2-dichloro-benzene Heating; Yield given. Yields of byproduct given;