Cesium carbonate → 2,5-Dimethyl-2'-methylbiphenyl

Beteiligte Stoffe

Reaktionsschritte

2-Chloro-p-xylene (56 mg, 0.40 mmol) reacted with 2-methylphenylboronic acid (82 mg, 0.60 mmol) using 2.5/5.0 mol % of Pd(dba)2/Ph5FcP(t-Bu)2 and Cs2CO3 (391 mg, 1.20 mmol) in 1,2-dioxane at 100° C. to give the title compound (63 mg, 80%): 1H-NMR (300 MHz, CDCl3): δ 7.12-7.18 (m, 6H), 6.97 (s, 1H), 2.37 (s, 3H), 2.10 (s, 3H), 2.05 (s, 3H). 13C{1H}-NMR (125 MHz, CDCl3): δ 141.74, 141.45, 135.77, 134.86, 132.60, 129.94, 129.72, 129.65, 129.26, 127.81, 127.02, 125.47, 20.92, 19.81, 19.28. GC/MS(EI): m/z 196 (M+).

Herkunft & Nachweise