Methyl iodide → 2-(6-chloro-1-methyl-1H-indazol-3-yl)-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((R)-2-methoxy-1-methyl-ethyl)-amide

Participants

Reaction Conditions

Reaction Steps

In a 25 mL round-bottomed flask, 2-(6-chloro-1-methyl-1H-indazol-3-yl)-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((R)-2-hydroxy-1-methyl-ethyl)-amide (70 mg, 0.136 mmol), silver oxide (51 mg, 0.22 mmol) and methyl iodide (100 μl, 1.6 mmol) were combined with MeCN to give a black suspension. The round bottom flask was wrapped in foil to exclude light. The system was placed in a sand bath and heated to 40° C. with stirring. The temperature was maintained for 2 days. Upon cooling, the reaction mixture was filtered through a pad a celite. The filtrate was concentrated. The crude material was purified by chromatography over SiO2 with EtOAc/hexanes (gradient: 0%-40% EtOAc) to afford 32 mg (45%) of 2-(6-chloro-1-methyl-1H-indazol-3-yl)-5-(2-trimethylsilanylethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((R)-2-methoxy-1-methyl-ethyl)-amide as an off-white solid. [M+Na]+=551.

Provenance & Evidence