反应详情

To a solution of 0.26 mL (3.3 mmol) of methanesulfonyl chloride in 18 mL of acetonitrile at 0° C. was added 0.77 g (3.0 mmol) of 3-chloro-1-(3-chloro-2-pyridinyl)-1H-pyrazol-5-carboxylic acid from Step J. 0.42 mL (3.0 mmol) of triethylamine in 9 mL of acetonitrile was added dropwise. After 20 minutes at 0° C., 0.525 g (3.0 mmol) of material from Step F was added. After 15 minutes 0.42 mL (3.0 mmol) of triethylamine was added dropwise. After 2 hours 0.26 mL (3.3 mmol) of methanesulfonyl chloride was added. After stirring overnight. The reaction mixture was poured into water. Filtration afforded 0.27 g of the title compound.

1. filtrationFiltration