2-Propenoic acid, 2-cyano-3-ethoxy-, ethyl ester → HCID 59173386, compound

Participants

Reaction Steps

A mixture of (6-hydrazino-pyrimidin-4-yl)-methyl-carbamic acid tert-butyl ester (4.0 g, 16.7 mmol), 2-cyano-3-ethoxy-acrylic acid ethyl ester (3.02 g, 17.5 mmol) and ethanol (25 mL) is heated to reflux for 4 hours. The reaction mixture is then concentrated and triturated with water (10 mL). White precipitate forms. After filtration, the undissolved solid is further washed with water, then air-dried to give 5-amino-1-[6-(tert-butoxycarbonyl-methyl-amino)-pyrimidin-4-yl]-1H-pyrazole-4-carboxylic acid ethyl ester as white powder.

Provenance & Evidence