Chlorotrimethylsilane → HCID 178474807, Verbindung

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

A solution of 4.6 g (35 mmol) of N-acetyl-beta-alanine, 100 ml acetonitrile, and 3.9 ml (35 mmol) of N-methylmorpholine is stirred at -15° C. and 5.0 ml (38.5 mmol) of isobutyl chloroformate is added. After 30 minutes at -15° C. a solution prepared from 4.05 g (17.5 mmol) of 2-(4-aminophenyl)-4-hydroxy-5-pyrimidine carboxylic acid, 7.35 ml (52.5 mmol) of triethylamine, and 7.96 ml (62.7 mmol) of trimethylsilyl chloride in 100 ml of dichloromethane is added and the mixture stirred at -10° C. for 1 hour and at room temperature overnight. The mixture is evaporated to near dryness in vacuo and treated with 200 ml of water. The product is precipitated by acidifying to pH 2.0 and is filtered, washed with water, isopropanol, ether, and dried to give 5.8 g of 2-[4-(N-acetyl-beta-alanylamino)phenyl]-4-hydroxy-5-pyrimidine carboxylic acid.

Herkunft & Nachweise