Ethylenediamine → HCID 71288172, compound

Participants

Reaction Steps

In a round-bottomed flask, 2-(6-fluoro-1-methyl-1H-indazol-3-yl)-5-(2-trimethylsilanylethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((R)-2,2-difluoro-1-methyl-3-phenyl-propyl)-amide (133 mg, 0.21 mmol was dissolved in dichloromethane (1.1 ml) and trifluoroacetic acid (0.64 ml, 8.3 mmol) was added. The reaction mixture was stirred at room temperature for 2 h then concentrated. The residue was dissolved in dichloromethane (1.1 ml) and ethylenediamine (0.84 ml, 12.4 mmol) was added. The yellow solution was stirred at room temperature for 1 h then quenched with water and extracted with EtOAc (2×). The combined organic layers were washed with water and brine then dried over sodium sulfate, filtered and concentrated. The residue was triturated with 5% EtOAc/diethyl ether to afford 73 mg (70%) of 2-(6-fluoro-1-methyl-1H-indazol-3-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((R)-2,2-difluoro-1-methyl-3-phenyl-propyl)-amide as a light yellow powder. MS: (M+Na)+=501; 1H NMR (DMSO-d6, 400 MHz): δ (ppm) 12.94 (br. s., 1H), 9.12 (s, 1H), 8.52 (s, 1H), 8.47 (dd, J=8.9, 5.4 Hz, 1H), 8.36 (d, J=9.8 Hz, 1H), 7.68 (dd, J=9.8, 2.0 Hz, 1H), 7.23-7.35 (m, 5H), 7.02 (td, J=9.0, 2.3 Hz, 1H), 4.60-4.78 (m, 1H), 4.15 (s, 3H), 3.33-3.45 (m, 2H), 1.41 (d, J=7.0 Hz, 3H).

Provenance & Evidence