1: (3-methoxyphenyl)-magnesium bromide With tris-(dibenzylideneacetone)dipalladium(0); pinacol phosphonate in tetrahydrofuran T=20°C; Kumada-Corriu cross-coupling reaction; 0.0833333 h; Inert atmosphere; 2: cyclohept-1-en-1-yl 4-methylbenzenesulfonate in tetrahydrofuran T=20°C; Kumada-Corriu cross-coupling reaction; 22 h; Inert atmosphere; chemoselective reaction;

oxalic acid in toluene 16 h; Heating; Yield given;

1: 1.) Mg / 1.) THF, 2.) THF, room temp., 30 min, 50-55 deg C, 1 h 2: oxalic acid / toluene / 16 h / Heating View Scheme

1: 1.) Mg / 1.) THF, 2.) THF, room temp., 30 min, 50-55 deg C, 1 h 2: oxalic acid / toluene / 16 h / Heating View Scheme