1H-imidazole in N,N-dimethyl-formamide T=20°C; 14 h;

1: With lithium diisopropyl amide in tetrahydrofuran; n-heptane; ethylbenzene T=-78°C; 2 h; 2: With ammonium chloride in tetrahydrofuran; n-heptane; ethylbenzene

1: With triphenylphosphine in dichloromethane T=0 - 20°C; Ramirez-Corey-Fuchs reaction; 0.5 h; 2: With lithium diisopropyl amide in tetrahydrofuran; n-heptane; ethylbenzene T=-78°C; Ramirez-Corey-Fuchs reaction; 2 h; 3: With ammonium chloride in tetrahydrofuran; n-heptane; ethylbenzene Ramirez-Corey-Fuchs reaction;

1: N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide; acetonitrile / 16 h 2: triphenylphosphine / dichloromethane / 0.5 h / 0 - 20 °C 3: lithium diisopropyl amide / tetrahydrofuran; n-heptane; ethylbenzene / 2 h / -78 °C View Scheme

1: N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide; acetonitrile / 16 h 2: triphenylphosphine / dichloromethane / 0.5 h / 0 - 20 °C 3: lithium diisopropyl amide / tetrahydrofuran; n-heptane; ethylbenzene / 2 h / -78 °C View Scheme

1: triphenylphosphine / dichloromethane / 0.5 h / 0 - 20 °C 2: lithium diisopropyl amide / tetrahydrofuran; n-heptane; ethylbenzene / 2 h / -78 °C View Scheme

boric acid trimethyl ester; (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride 1.) THF, 2.) reflux; Yield given. Multistep reaction;