1.1: Grubb's 2nd generation catalyst / toluene / 1 h / 80 °C / |Inert atmosphere 2.1: tetrakis(triphenylphosphine) palladium(0); silver carbonate / toluene / 4 h / 100 °C / |Inert atmosphere 3.1: methanol; magnesium / benzene / 1 h / 20 °C / |Inert atmosphere 4.1: 4-(N,N-dimethlyamino)pyridine / acetonitrile / 1 h / 20 °C / |Inert atmosphere 5.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 2 h / 20 °C / |Inert atmosphere 6.1: [bis(acetoxy)iodo]benzene / acetic acid / 1 h / 20 °C / |Inert atmosphere 7.1: sodium chlorite; sodium dihydrogen phosphate monohydrate; 2-methyl-but-2-ene / tert-butyl alcohol; tetrahydrofuran; water / 4 h / 20 °C 8.1: diethyl ether; methanol / 0.25 h / 20 °C / |Inert atmosphere 9.1: 1,8-diazabicyclo[5.4.0]undec-7-ene / methanol / 8 h / 20 °C / |Inert atmosphere 10.1: trifluoroacetic acid; dimethylsulfide / dichloromethane / 1 h / 20 °C / |Inert atmosphere 10.2: 0.5 h / 50 °C / |Inert atmosphere 11.1: acetic acid; sodium cyanoborohydride / methanol / 1 h / 20 °C / |Inert atmosphere View Scheme