Cesium carbonate → 2-Methylthio-4-chloro-5-nitro-6-(2-benzyloxy-5-cyanophenoxy)pyrimidine

Beteiligte Stoffe

Reaktionsschritte

To 4,6-dichloro-5-nitro-2-methylthiopyrimidine (5.0 g, 20.8 mmol) in 200 mL acetonitrile at 0° C. was added cesium carbonate (8.82 g, 27.1 mmol) followed by the addition of 3-hydroxy-4-benzyloxybenzonitrile (4.69 g, 20.8 mmol), and the resulting reaction mixture was stirred for 16 hours. The volatiles were evaporated and the residue chromatographed on silica gel (hexane/ethyl acetate, 2:1) to afford 5.0 g of 2-methylthio-4-chloro-5-nitro-6-(2-benzyloxy-5-cyanophenoxy)pyrimidine, a compound of formula (C).

Herkunft & Nachweise