Dimethylformamide → 2-(5-Benzyloxy-2-nitro-phenylamino)-4-(3-chloro-phenyl)-thiazole-5-carboxylic acid ethyl ester

Participants

Reaction Steps

To a mixture of 2.57 g (10 mmole) of 4-benzyloxy-2-fluoro-1-nitro-benzene, 2.83 g (10 mmole) of 2-amino-4-(3-chloro-phenyl)-thiazole-5-carboxylic acid ethyl ester and 20 mL of dimethylformamide was added 16.25 g (50 mmole) of cesium carbonate. The mixture was heated at 100 degrees for 1 hour. The reaction was allowed to cool to room temperature and then 500 mL of water was added. The mixture was stirred for 15 minutes and the resulting yellow solid collected by filtration to give 5.09 g of 2-(5-benzyloxy-2-nitro-phenylamino)-4-(3-chloro-phenyl)-thiazole-5-carboxylic acid ethyl ester (VI.25).

Provenance & Evidence