Ammonia → HCID 44609420, compound

Participants

Reaction Steps

Trichloroacetyl isocyanate (1.7 mL, 14 mmol) was added dropwide to a solution of 2-amino-6-methoxyindole-3-carboxamide (Reference compound No.2-1, 2.9 g, 14 mmol) in anhydrous tetrahydrofuran (50 mL) at −40° C. over a period of 10 minutes and the mixture was stirred for 2.5 hours. Moreover, 2.0 M ammonia in methanol solution (40 mL, 80 mmol) was added thereto and the mixture was stirred overnight at room temperature. The reaction solution was concentrated in vacuo, and the obtained solid was filtered off and washed with a mixed solvent of chloroform-methanol (50 mL). The solid was dried at 40° C. under reduced pressure to give the title compound (3.1 g) as a gray solid (88%).

Provenance & Evidence