3,4-Dimethoxystyrene → HCID 178489978, Verbindung

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

A flask was charged with 5-(2,4-Bis-benzyloxy-5-bromo-phenyl)-4-(1-methyl-1H-indol-5-yl)-4H-[1,2,4]triazol-3-ol (290 mg; 0.50 mmol), 3,4-dimethoxystyrene (98 mg; 0.60 mmol), tris(dibenzylideneacetone)dipalladium(0) (11 mg; 0.025 eq.), tris-tert-butylphosphine (10 mg; 0.10 eq.), diisopropylethylamine (77 mg; 0.60 mmol), and dimethylformamide (2 mL). The reaction was heated at 135° C. overnight, and then cooled. The solution was diluted with ethyl acetate (40 mL) and washed with water (3×40 mL). The organic layer was dried with sodium sulfate, evaporated, and purified by column chromatography to give 5-{2,4-bis-benzyloxy-5-[2-(3,4-dimethoxy-phenyl)-vinyl]-phenyl}-4-(1-methyl-1H-indol-5-yl)-4H-[1,2,4]triazol-3-ol (220 mg; 0.33 mmol).

Herkunft & Nachweise