1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 46830534, compound

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Reaction Steps

3-(4-Isopropyl-[1,2,3] thiadiazol-5-yl)-N-(5-methyl-pyrazin-2-ylmethyl)-5-(5-methyl-pyridin-2-yl)-benzamide was prepared using the carbodiimide-based amide synthesis procedure of example 7 in published patent application US2008004442. Briefly, 3-(4-isopropyl-[1,2,3] thiadiazol-5-yl)-5-(5-methyl-pyridin-2-yl)-benzoic acid, C-(5-methyl-pyrazin-2-yl)-methylamine, EDCI, HOBt and Et3N were added to methylene chloride, and the mixture was stirred at room temperature for 16 hours, then was partitioned between water and methylene chloride. The combined organic layers were dried (MgSO4), filtered and concentrated under reduced pressure. The resulting residue was purified via flash chromatography to give 3-(4-isopropyl-[1,2,3] thiadiazol-5-yl)-N-(5-methyl-pyrazin-2-ylmethyl)-5-(5-methyl-pyridin-2-yl)-benzamide, MS (M+H)=445.

Provenance & Evidence