3,4,5-Trimethoxybenzonitrile → HCID 178487380, Verbindung

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

7 g 2-Methyl-nicotinic acid was suspended in 150 mL of tetrahydrofuran, and cooled to −70° C. with a bath of ethanol/dry ice. 80 mL lithium diisopropylamide (2.0 M in tetrahydrofuran/n-heptane/ethylbenzene) was added dropwise over 10 min and the mixture was stirred for 2 h at 0° C. Then it was cooled to −73° C. and a solution of 10 g 3,4,5-trimethoxy-benzonitrile (4.24) in 50 mL tetrahydrofuran was added. Then the reaction mixture was warmed overnight to ambient temperature. 30 mL Water was added and the solvent was distilled off before 200 mL ethyl acetate was added and the precipitate that formed was collected.

Herkunft & Nachweise